Method, apparatus, and system for designing and planning a shared satellite communications network

• US 7,242,945 B2
• Filed: 06/30/2004
• Issued: 07/10/2007
• Est. Priority Date: 06/30/2004
• Status: Active Grant

• Current Assignee: VT iDirect Inc. (Singapore Technologies Engineering Limited)
• Original Assignee: Idirect Technologies
• Inventors: Reddi, Sasmith
• Primary Examiner(s): Gelin; Jean
• Assistant Examiner(s): Vu; Michael T.
• Application Number:
  US10/879,304
• Publication Number:
  US 20060068798A1
• Time in Patent Office: 1,105 Days
• Field of Search: 709/315, 709/247, 709/223, 370/329, 707/503, 715/503, 705/7, 455/446
• US Class Current: 455/446
• CPC Class Codes: H04B 10/118 specially adapted for satellite communication
• CPC Class Codes: H04B 7/18519 Operations control, administration or maintenance

Abstract

A computer-implemented satellite network planning system that enables a user to plan a satellite communications network, using an industry-standard spreadsheet as a platform. The spreadsheet contains embedded equations used to produce a network design that describes components of a physical layer of the planned network (i.e. hub terminals, satellite, and remote terminals), and provides bandwidth allocations and traffic engineering features of the planned network. The spreadsheet includes a user-friendly interface that prompts the user to enter predetermined network parameters but does not display the embedded equations. The result is a user-friendly interface that is familiar enough for most LAN users, designers, and product managers to use and understand the results provided by the network planning system. The use of the industry-standard spreadsheet including the user-friendly interface reduces design time, allows non-technical managers to use the tool, and saves money for the user.

Claims

1. A computer-implemented satellite network planning system comprising:

a spreadsheet configured to contain embedded satellite network planning equations and receive data that is used as input for the embedded equations, said spreadsheet being an application that runs on an industry-standard operating system, said spreadsheet including a user interface configured to prompt a user to enter the data as predetermined satellite network parameters but not display the embedded equations;

a processor configured to execute the embedded equations using the data input via the user interface and to determine

a final satellite network design that includes at least one hub terminal, at least one satellite, and at least one remote terminal,

a total number of upstream carriers, downstream carriers and an information rate for each upstream carrier and downstream carrier,

performance characteristics of the final satellite network including a frame length of each upstream carrier and an oversubscription of each downstream carrier, and to determine the transmission rate and a bandwidth for the upstream and downstream carriers for the final satellite network design, the transmission rate including bits needed in a carrier and being calculated based on Quadrative Phase-Shift Keying (QPSK) modulation, and demand information, encryption information, and packet assembly and disassembly data being used to further analyze the upstream and the bandwidth available for each time slot, and

a cost per month for using a satellite network according to the final satellite network design; and

a display mechanism configured to display the final satellite network design with both text and graphics, said graphics including an image of a spectral occupancy of the downstream carriers.

2. The computer-implemented satellite network planning system according to claim 1, wherein the industry-standard operating system is a MICROSOFT WINDOWS operating system and the spreadsheet is a MICROSOFT EXCEL spreadsheet.

3. The computer-implemented satellite network planning system according to claim 1, wherein the final network design further includes bandwidth allocations calculated from an integrated bandwidth allocation budget analysis performed for each remote terminal and hub terminal.

4. The computer-implemented satellite network planning system according to claim 3, wherein the integrated bandwidth allocation budget analysis includes information rates for upstream links and downstream links as well as FEC Blocks for configuring a frame length for the satellite network.

5. The computer-implemented satellite network planning system according to claim 4, wherein the integrated bandwidth allocation budget analysis further includes bandwidth-limited satellite capacity information for upstream and downstream links based on a bandwidth-limited parameter entered by the user.

6. The computer-implemented satellite network planning system according to claim 5, wherein the integrated bandwidth allocation budget analysis is configured to account for an additional power equivalent bandwidth parameter entered by the user and provides additional power-limited satellite capacity information for the upstream and downstream links of the satellite network.

7. The computer-implemented satellite network planning system according to claim 3, wherein the bandwidth allocation budget analysis determines the total cost per month and the cost per site per month based on a cost per bandwidth per month entered by the user.

8. The computer-implemented satellite network planning system according to claim 1, wherein, the predetermined network parameters include:

total number of sites for the network;

type of network;

upstream and downstream bandwidth per remote site;

upstream minimum CIR for each site;

downstream CIR for each site;

downstream number of sites with CIR;

downstream oversubscription ratio;

downstream bandwidth reserved for Multicast information;

upstream and downstream IP data rate;

upstream and downstream FEC;

guard band for the network; and

Frame Length for the network.

9. The computer-implemented satellite network planning system according to claim 8, wherein the user interface is configured to prompt the user to enter a network format, said format being one of at least Voice Only, Data Only, and Voice and Data.

10. The computer-implemented satellite network planning system according to claim 9, wherein when the network format input by the user is at least one of Voice Only and Voice and Data, the user interface is configured to prompt the user to enter a number of voice lines per site, a number of sites with voice, a voice usage percentage, and a bandwidth per voice channel.

11. The computer-implemented satellite network planning system according to claim 9, wherein the user interface is configured to at least one of prompt the user to enter an oversubscription upstream ratio manually, and select the processor to compute the upstream ratio automatically.

12. The computer-implemented satellite network planning system according to claim 11, wherein when the processor is selected to compute, the user is prompted to enter a percentage of time the upstream bandwidth is used, which is then used in combination with an expected usage percentage of an upstream link to automatically compute the oversubscription upstream ratio.

13. The computer-implemented satellite network planning system according to claim 1, wherein the processor is configured to automatically check at least one of the network parameters entered by the user for validity.

14. The computer-implemented satellite network planning system according to claim 1 further comprising:

a summary unit configured to provide a summary of the final network design in a displayed text format.

15. The computer-implemented satellite network planning system according to claim 1 further comprising:

a conversion tool configured to determine IP data rates from at least one of an information rate, transmission rate, and required bandwidth.

16. A method for planning a satellite network comprising steps of:

embedding satellite network planning equations in a spreadsheet application operating on an industry-standard operating system;

prompting a user to enter data as predetermined satellite network parameters via the spreadsheet;

receiving the data as input to the satellite network planning equations;

processing the input using the satellite network planning equations;

determining a final satellite network design that includes at least one hub terminal, at least one satellite, and at least one remote terminal;

determining a total number of upstream carriers and downstream carriers and an information rate for each upstream carrier and downstream carrier;

determining performance characteristics of the final satellite network design including a frame length of each upstream and an oversubscription of each downstream and determining the transmission rate and a bandwidth for the upstream and downstream carriers for the final satellite network design, the transmission rate including bits needed in a carrier and being calculated based on Quadrative Phase-Shift Keying (QPSK) modulation, and demand information, encryption information, and packet assembly and disassembly data being used to further analyze the upstream and the bandwidth available for each time slot;

determining a cost per month for using the final satellite network design;

displaying the final satellite network design;

displaying the performance characteristics of the final satellite network design; and

displaying the cost split as a total cost per month of the final satellite network and a cost per month of each site of the final satellite network.

17. The method for planning a satellite network according to claim 16, wherein the industry-standard operating system is a MICIROSOFT WINDOWS operating system and the spreadsheet is a MICIROSOFT EXCEL spreadsheet.

18. The method for planning a satellite network according to claim 16, wherein processing the input comprises:

performing a bandwidth allocation budget analysis based on the input for each remote terminal and hub terminal that provides information rates for upstream links and downstream links, FEC blocks for configuring a frame length for the satellite network, and bandwidth-limited satellite capacity information for upstream and downstream links.

19. The method for planning a satellite network according to claim 18, wherein processing the input further comprises:

accounting for an additional power-limited parameter input and providing additional power-limited satellite capacity information for the upstream and downstream links of the satellite network.

20. The method for planning a satellite network according to claim 16, wherein processing the input comprises:

determining the cost per month and cost per site per month based on a cost per bandwidth per month input.

21. The method for planning a satellite network according to claim 16, wherein prompting the user to enter data via the spreadsheet comprises:

prompting the user to enter the total number of sites for the network, network format, upstream and downstream bandwidth per remote site, upstream minimum CIR for each site, downstream CIR for each site, downstream number of sites with CIR, downstream oversubscription ratio, downstream bandwidth reserved for multicast information, upstream and downstream IP data rate, upstream and downstream FEC, guard band for the network, and frame length for the network.

22. A computer program product storing program instructions for execution on a computer system, which when executed by the computer system configures the computer system to operate as a computer-implemented satellite network planning system comprising:

a spreadsheet configured to contain embedded satellite network planning equations and receive data that is used as input for the embedded equations, said spreadsheet being an application that runs on an industry-standard operating system, said spreadsheet including a user interface configured to prompt a user to enter the data as predetermined satellite network parameters but not display the embedded equations;

a processor configured to execute the embedded equations using the data input via the user interface and to determine

a final satellite network design that includes at least one hub terminal, at least one satellite, and at least one remote terminal,

a total number of upstream carriers and downstream carriers and an information rate for each upstream carrier and downstream carrier,

performance characteristics of the final satellite network including a frame length of each upstream carrier and an oversubscription of each downstream carrier, and to determine the transmission rate and a bandwidth for the upstream and downstream carriers for the final satellite network design, the transmission rate including bits needed in a carrier and being calculated based on Ouadrative Phase-Shift Keying (QPSK) modulation, and demand information, encryption information, and packet assembly and disassembly data being used to further analyze the upstream and the bandwidth available for each time slot, and

a cost per month for using the final satellite network; and

a display mechanism configured to display the final satellite network deign with both text and graphics, said graphics including an image of a spectral occupancy of the downstream carriers.