System for managing space segment usage among broadcast service providers

• US 6,115,366 A
• Filed: 11/05/1996
• Issued: 09/05/2000
• Est. Priority Date: 11/05/1996
• Status: Expired due to Fees

• Current Assignee: WorldSpace, Inc.
• Original Assignee: WorldSpace, Inc.
• Inventors: Harris, G. Christopher, Campanella, S. Joseph
• Primary Examiner(s): Urban, Edward F.
• Assistant Examiner(s): Tran, Congvan
• Application Number:
  US08/746,069
• Time in Patent Office: 1,400 Days
• Field of Search: 370/279, 370/315, 370/321, 370/324, 370/325, 370/326, 370/280, 370/281, 370/294, 370/319, 455/422, 455/427, 455/428, 455/7, 455/12.1, 455/13.1, 455/39, 455/406, 348/6, 348/7, 348/12, 348/13
• US Class Current: 370/319
• CPC Class Codes: H04B 7/18523 Satellite systems for providing broadcast service to terrestrial stations, i.e. broadcast satellite service arrangements specially adapted for satellite broadcast receiving H04H40/90; picture transmission via satellite H04N1/00103; television transmission via satellite H04N7/20
• CPC Class Codes: H04B 7/2041 Spot beam multiple access

Abstract

A system for managing a satellite and a number of broadcast stations, which generate programs for transmission to remote radio receivers on broadcast channels via the satellite, comprises a satellite control system for controlling the attitude and orbit of the satellite and on-board processing of the programs uplinked to the satellite. A broadcast control system is connected to the satellite control center and to the broadcast stations. The broadcast control system assigns selected ones of the broadcast channels to service providers desiring to uplink at least one of the programs to the satellite, to store channel data relating to the assignments of the broadcast channels and provide the channel data to the satellite control system, and to bill the service providers according to the number of the broadcast channels assigned thereto. The broadcast control system provides the service providers with a plurality of options comprising the number of said broadcast channels to be reserved for uplink transmission, dates and times of day for using the reserved broadcast channels, and which of a number beams associated with the satellite are to be used for downlink transmission. The broadcast control system notifies the satellite control system as to which of the beams are to be used and when, and the satellite control system generates corresponding data processing signals for routing the program to selected ones of the beams.

Claims

1. A system for managing a satellite and a number of broadcast stations for generating programs for transmission to remote radio receivers on broadcast channels via the satellite, the system comprising:

a satellite control system configured to generate control signals for controlling the attitude and orbit of said satellite, and data processing control signals for controlling on-board processing of said programs uplinked to said satellite via said broadcast stations and routing to downlink time division multiplexed carriers;

at least one telemetry, range and control system connected to said satellite control system and configured to communicate with said satellite to provide said control signals and said data processing signals from said satellite control system to said satellite; and

a mission control system connected to said satellite control system and to said broadcast stations, said mission control system being operable to assign selected ones of said broadcast channels to service providers desiring to transmit at least one of said programs via said satellite, to store channel data relating to said assignments of said broadcast channels and provide said channel data to said satellite control system, and to bill said service providers according to the number of said broadcast channels assigned thereto, said mission control system providing said service providers with a plurality of options comprising number of said broadcast channels to be reserved for uplink transmission, dates and times of day for using said reserved broadcast channels, and which of a number of time division multiplexed signals in a number of beams associated with said satellite are to be used for downlink transmission, said mission control system being operable to indicate to said satellite control system which of time division multiplexed signals in said beams are to be used and said satellite control system generating corresponding said data processing signals for routing of said program to selected ones of said beams.

2. A system as claimed in claim 1, wherein said broadcast channels correspond to frequency locations in a predetermined radio frequency spectrum and said mission control system is programmable to assign noncontiguous ones of said broadcast channels to one of said service providers.

3. A system as claimed in claim 2, wherein said mission control system is operable to perform a defragmentation process to reassign said service providers to different broadcast channels to optimize the use of the satellite uplink spectrum.

4. A system as claimed in claim 1, further comprising a channel service monitor connected to said mission control system, said mission control system being operable to validate delivery of said programs with sufficient signal strength and sufficiently low bit error rate using said channel service monitor prior to billing said service providers.

5. A system as claimed in claim 1, further comprising a broadcast control center for monitoring and controlling said broadcast stations to maintain performance of said broadcast stations within predetermined tolerances regarding carrier frequency assignments, antenna power levels and antenna pointing.

6. A system as claimed in claim 1, further comprising a broadcast control center for monitoring and controlling said broadcast stations and being operable to instruct said broadcast stations to terminate use of said broadcast channels.

7. A system as claimed in claim 1, further comprising a broadcast control center for monitoring and controlling said broadcast stations and being operable to generate and transmit a command to at least one of said broadcast stations to power down said broadcast station.

8. A system for managing a satellite and a number of broadcast stations for generating programs for transmission to remote radio receivers via the satellite, the system comprising:

a satellite control system configured to generate control signals for controlling the operation of said satellite, said satellite being configured to receive an uplink comprising frequency division multiple access channels and to generate at least two time division multiplexed downlink signals, each of said signals comprising a plurality of time slots, said broadcast stations being operable to modulate said programs into prime rate increments for transmission on selected ones of said frequency division multiple access channels, said satellite being further configured to route said prime rate increments to selected ones of said time slots in accordance with said control signals;

a mission control system connected to said satellite control system and to said broadcast stations, said mission control system being operable to assign selected ones of said frequency division multiple access channels to service providers desiring to transmit said prime rate increments via said satellite, to assign at least one of said time division multiplexed signals for downlink transmission of said prime rate increments, to store channel data relating to said assignments of said frequency division multiple access channels and said time division multiplexed signals and to provide said channel data to said satellite control system for generating said control signals; and

at least one telemetry, range and control system connected to said satellite control system and configured to communicate with said satellite to provide said control signals from said satellite control system to said satellite.

9. A system as claimed in claim 8, wherein said mission control system is programmable to assign noncontiguous ones of said frequency division multiple access channels to one of said service providers.

10. A system as claimed in claim 8, wherein said system is operable to validate successful transmission of said prime rate increments via at least one of time division multiplexed signals prior to generating respective bills for corresponding said service providers.

11. A system as claimed in claim 8, wherein said master control system is operable to perform dynamic control by assigning selected ones of said frequency division multiple access channels for periodic and temporary usage by at least a selected one of said service providers on one of a monthly, weekly and daily basis.

12. A system as claimed in claim 8, wherein said master control system is operable to perform static control by assigning selected ones of said frequency division multiple access channels to selected ones of said service providers for substantially constant and exclusive use.

13. A system as claimed in claim 8, further comprising a broadcast control system connected to said broadcast stations and operable to monitor said broadcast stations to determine if said broadcast stations are performing within predetermined tolerances relating to at least one of frequency, power and the direction of an antennae connected to respective said broadcast stations.

14. A system as claimed in claim 8, further comprising a broadcast control system connected to said broadcast stations and operable to monitor said broadcast stations to determine if said broadcast stations are performing within predetermined tolerances, and to generate and transmit a command to at least one of said broadcast stations to power down said broadcast station.