Method and apparatus for command and control of remote systems using low earth orbit satellite communications

• US 6,160,993 A
• Filed: 02/23/1996
• Issued: 12/12/2000
• Est. Priority Date: 02/23/1996
• Status: Expired due to Term

• Current Assignee: ViaSat Incorporated
• Original Assignee: Scientific-Atlanta Incorporated (Cisco Systems, Inc.)
• Inventors: Wilson, John Bryan
• Primary Examiner(s): BRITTON, HOWARD W
• Application Number:
  US08/604,784
• Time in Patent Office: 1,754 Days
• Field of Search: 455/8, 455/9, 455/12.1, 455/13.1, 455/13.3, 455/13.4, 455/67.1, 455/67.7, 455/127, 455/427, 455/430, 379/59
• US Class Current: 455/12.1
• CPC Class Codes: H04B 7/18576 Satellite systems for providing narrowband data service to fixed or mobile stations, e.g. using a minisatellite, a microsatellite for selecting H04W
• CPC Class Codes: H04B 7/18578 Satellite systems for providing broadband data service to individual earth stations for selecting H04W; provisions for broadband connection, H04Q11/0478

Abstract

A method and apparatus for providing command and control of remote systems using low earth orbit satellite communications is disclosed. According to the present invention, a programmable transceiver apparatus provides a two-way communications path between a remote user and a control center via a low earth orbit satellite at frequencies below 1 GHz. The transceiver apparatus includes a transceiver for communicating with the low earth orbit satellite; an antenna coupled to the transceiver; at least one interface communicating signals between at least one external device located at the remote user, wherein the transceiver apparatus is programmed to transmit data related to the external device to the satellite in response to a signal communicated to the transceiver via the low earth orbit satellite, an internal program of the transceiver or an alarm or exception signal generated by any of the external devices or the user. According to another embodiment of the present invention, the command signals from the control center are embedded in an information signal of a direct-to-home subscription information system signal via a geostationary satellite operating at frequencies greater than 1 GHz, and are separated at the user location and communicated to the programmable transceiver. The transceiver, in turn, selectively communicates the command signal to the devices and receives data from the devices. The received data is then transmitted to the control center via a low earth orbit satellite.

Claims

1. A programmable gateway for providing a two-way communication path between a control center and a remote user, comprising:

a transceiver for communicating with a low earth orbit (LEO) satellite;

an interface for connecting at least one external device to said gateway, said at least one external device being located at said remote user and being external to said gateway;

a processor for processing data received from said control center or from said at least one external device; and

memory for storing said data,

said processor being operative to;

receive device data from said at least one external device;

determine whether to immediately transmit said device data to said control center;

transmit said device data to said control center via said LEO satellite in response to a determination to immediately transmit said device data to said control center;

store said device data in said memory in response to a determination not to immediately transmit said device data to said control center; and

subsequently transmit said stored device data to said control center via said LEO satellite in response to a predetermined condition.

2. The programmable gateway of claim 1, wherein said predetermined condition comprises one of:

a signal received from said control center via said LEO satellite;

a predetermined time programmed into said gateway;

a predetermined time interval programmed into said gateway; and

an alarm or exception condition signal generated by one of said at least one external devices.

3. The programmable gateway of claim 1, wherein said at least one external device is selected from a group comprising utility meters, security monitoring devices, display devices, communications devices, electrical load control devices, power service connect/disconnect relays, power outage detectors, and equipment status monitoring devices.

4. The programmable gateway of claim 1, wherein said processor is further operative to receive programming data from said control center via said LEO satellite and to operate according to said programming data.

5. The programmable gateway of claim 1, wherein said processor is further operative to:

receive control signals from said control center via said LEO satellite; and

transmit said control signals to said at least one external device.

6. The programmable gateway of claim 1, wherein said processor is further operative to:

receive control signal from said control center via said LEO satellite;

determine which of said at least one external devices should receive said control signal; and

transmit said control signal to said receiving external device.

7. The programmable gateway of claim 1, further comprising a security circuit for encrypting and decrypting data transmitted between said gateway and said control center.

8. A system for monitoring and controlling a device associated with a user from a control center, said user being remotely located from said control center, comprising:

a control center for generating control messages for said device and receiving monitoring messages from said device; and

a programmable gateway connected to said devices and located remotely from said control center, said programmable gateway communicating with said control center via a low earth orbit (LEO) satellite,

said programmable gateway being operative to;

receive device data from said device;

determine whether to immediately transmit said device data to said control center;

transmit said device data to said control center via said LEO satellite in response to a determination to immediately transmit said device data to said control center;

store said device data in response to a determination not to immediately transmit said device data to said control center; and

subsequently transmit said stored device data to said control center via said LEO satellite in response to a predetermined condition.

9. The system of claim 8, wherein said control center is operative to:

receive data from at least one external device;

reformat said received data; and

transmit said reformat data to a remote computer system.

10. The system of claim 8, wherein said predetermined condition comprises one of:

a signal received from said control center;

a predetermined time programmed into said gateway;

a predetermined time interval programmed into said gateway; and

an alarm or exception condition signal generated by said device.

11. The system of claim 9, wherein said at least one external device is selected from a group comprising utility meters, security monitoring devices, display devices, communications devices, electrical load control devices, power service connect/disconnect relays, power outage detectors, and equipment status monitoring devices.

12. The system of claim 8, wherein said gateway is further operative to receive programming data from said control center via said LEO satellite and to operate in response to said programming data.

13. The system of claim 8, wherein said gateway is connected to a plurality of external devices, and wherein said gateway is further operative to:

receive a control signal from said control center via said LEO satellite;

determine which of said plurality of connected external devices should receive said control signal; and

transmit said control signal to said receiving connected external device.

14. A method for collecting data from a plurality of remote devices via low earth orbit (LEO) satellite, comprising the steps of:

generating instructions for a gateway attached to at least one of said remote devices;

transmitting said instructions to said gateway via said LEO satellite, said instructions indicating when said gateway should provide data collected from said attached remote devices;

receiving from said gateway said data collected from said attached remote devices;

processing said received data to provide reformatted data; and

providing said reformatted data to a subscriber.

15. The method of claim 14, wherein said instructions cause said gateway to immediately provide collected data corresponding to an alarm condition and to store other collected data.

16. The method of claim 15, wherein said instructions further cause said gateway to provide said stored collected data in response to one of:

a signal received from a control center;

a predetermined time programmed into said gateway; and

a predetermined time interval programmed into said gateway.

17. The method of claim 14, where in said plurality of remote devices are selected from a group comprising utility meters, security monitoring devices, display devices, communications devices, electrical load control devices, power service connect/disconnect relays, power outage detectors, and equipment status monitoring devices.