Apparatus and methods for dynamic spectrum allocation in satellite communications

• US 9,246,576 B2
• Filed: 03/05/2012
• Issued: 01/26/2016
• Est. Priority Date: 03/10/2011
• Status: Active Grant

• Current Assignee: ELTA Systems Limited (Government of Israel)
• Original Assignee: ELTA Systems Limited (Government of Israel)
• Inventors: Yanai, Yossef, Levy, Ehud
• Primary Examiner(s): Williams, Kimberly A
• Application Number:
  US14/004,188
• Publication Number:
  US 20140087724A1
• Time in Patent Office: 1,422 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H04B 7/18543 for adaptation of transmission parameters, e.g. power control for detecting or preventing errors in the information received H04L1/00
• CPC Class Codes: H04B 7/1858 Arrangements for data transmission on the physical system, i.e. for data bit transmission between network components
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 84/06 Airborne or Satellite Networks space-based or airborne stations H04B7/185

Abstract

A communication system including Satellite Communication apparatus providing communication services to at least a first set of communicants, the first set of communicants including a first plurality of communicants, wherein the communication services are provided to each of the communicants in accordance with a spectrum allocation corresponding thereto, thereby to define a first plurality of spectrum allocations apportioning a first predefined spectrum portion among the first set of communicants; and Dynamic Spectrum Allocations apparatus operative to dynamically modify at least one spectrum allocation corresponding to at least one of the first plurality of communicants without exceeding the spectrum portion.

Claims

1. A communication system operative in conjunction with Satellite Communication apparatus providing communication services to at least a first set of communicants, said first set of communicants including a first plurality of communicants, wherein said communication services are provided to each of said communicants in accordance with a spectrum allocation corresponding thereto, thereby to define a first plurality of spectrum allocations apportioning a first predefined spectrum portion among the first set of communicants;

the system comprising;

Dynamic Spectrum Allocation apparatus operative to dynamically modify, once per time period, wherein at least one time period is within an order of magnitude of no more than one minute, at least one spectrum allocation corresponding to at least one of the first plurality of communicants without exceeding said spectrum portion,

wherein said first set of communicants includes communicants which want to share bandwidth such that different communicants can communicate high definition images at different tires and wherein said Dynamic Spectrum Allocation apparatus is operative to dynamically modify at least one spectrum allocation corresponding to at least one of the first plurality of communicants without exceeding said spectrum portion, so as to enable different communicants, from among said first set, to communicate high definition images at different times,

wherein plurality of communicants are all sent to a single high-bandwidth task, however, at any given time window, only a predetermined number of the communicants need actually to transmit high-band information,

and wherein said Dynamic Spectrum Allocation apparatus provides each of said plurality of communicants with an indication of an anticipated time window in which wide band width applications are to be employed, thereby to reduce the required effective bandwidth by a factor of k, by separating command and control information, having a low data rate, from payload information having a high data rate by including all communicants as part of a command and control network and if there are requirements to use high data rate, assigning a new spectrum to a relevant communicant for transmission of payload data including provision of a video channel dynamically for a dynamic modification of the individual communicant'"'"'s current spectrum allocation.

2. A system according to claim 1 wherein said first plurality of communicants comprises at least one mobile vehicle equipped with apparatus for mobile telephone via satellite.

3. A system according to claim 1 wherein said communication services include provision of at least one narrow-band communication dedicated channel to at least one of the first plurality of communicants and wherein said Dynamic Spectrum Allocation apparatus is operative to dynamically provide use of said narrow-band communication dedicated channel to at least one of the first plurality of communicants.

4. A system according to claim 1 wherein said communication services include provision of at least one video channel to at least one of the first plurality of communicants and wherein said Dynamic Spectrum Allocation apparatus is operative to dynamically provide use of said video channel to at least one of the first plurality of communicants.

5. A system according to claim 1 wherein said communication services include provision of a Dynamic Spectrum Allocation control channel to at least one of the first plurality of communicants and wherein said Dynamic Spectrum Allocation apparatus is operative to receive, over the control channel, and recognize, at least one request from at least one individual communicant from among the first plurality of communicants for a dynamic modification of the individual communicant'"'"'s current spectrum allocation.

6. A system according to claim 5 wherein said Dynamic Spectrum Allocation control channel is a portion of an additional channel which is utilized in accordance with a protocol and said protocol supports recognition of said request for a dynamic modification of a current spectrum allocation.

7. A system according to claim 1 wherein said Dynamic Spectrum Allocation apparatus comprises a dynamic resources management system.

8. A system according to claim 1 wherein ACM/VCM technology is used to provide spectrum minimization on demand.

9. A system according to claim 1 having an architecture which, relative to a star topology'"'"'s architecture, supports more users working simultaneously, using SIC technology.

10. A system according to claim 1 wherein frequency cancellation technology is used to ensure that inbound and outbound bandwidths generally overlap thereby to decrease the frequency bandwidth used.

11. A system according to claim 1 wherein said Dynamic Spectrum Allocation apparatus dynamically modifies a spectrum allocation of an individual user and wherein said user is operative to switch at least one waveform accordingly, “

on the fly”

.

12. A system according to claim 1 wherein at least one of the first plurality of communicants, rather than using PTP protocols hence consuming large portions of the spectrum, instead become part of a communication network by joining the network via at least one command and control channel.

13. A system according to claim 12 wherein at least one high data rate-requesting user uses an instantaneous SCPC waveform to transmit at least one payload.

14. A system according to claim 1 wherein at least one Dynamic Spectrum Allocation control channel is provided to at least one of first and second pluralities of communicants and wherein said Dynamic Spectrum Allocation apparatus is operative to receive, over the control channel, and recognize, at least one request from at least one individual communicant from among the first and second pluralities of communicants for a dynamic modification of the individual communicant'"'"'s current spectrum allocation.

15. A system according to claim 1 wherein the dynamic spectrum allocation apparatus obtains, from each individual user from among a plurality of users associated with a hub, high/low band scheduling information, including at least one of:

an indication of an anticipated time window in which wide band width applications are to be employed by the individual user; and

an anticipated time window in which only narrow bandwidth applications are to be employed.

16. A system according to claim 1 wherein said dynamic spectrum allocation apparatus is operative to allocate spectrum such that at least once, a wide band is allocated to a first communicant from among said communicants within a first time window which the first communicant has indicated to require a wide bandwidth application, and subsequently, within a second time window, said wide band is allocated to a second communicant from among said communicants which has indicated that said second time window requires a wide bandwidth application.

17. A method for providing communication using Satellite Communication apparatus operative for providing communication services to at least a first set of communicants, said first set of communicants including a first plurality of communicants, the method comprising:

providing communication services to each of said communicants in accordance with a spectrum allocation corresponding thereto, thereby to define a first plurality of spectrum allocations apportioning a first predefined spectrum portion among the first set of communicants; and

including

providing Dynamic Spectrum Allocation apparatus operative to dynamically modify, once per time period, wherein at least one time period is within an order of magnitude of no more than one minute, at least one spectrum allocation corresponding to at least one of the first plurality of communicants without exceeding said spectrum portion,

wherein said first set of communicants includes communicants which want to share bandwidth such that different communicants can communicate high definition images at different times and wherein said Dynamic Spectrum Allocation apparatus is operative to dynamically modify at least one spectrum allocation corresponding to at least one of the first plurality of communicants without exceeding said spectrum portion, so as to enable different communicants, from among said first set, to communicate high definition images at different times,

wherein plurality of communicants are all sent to a single high-bandwidth task, however, at any given time window, only a predetermined number of the communicants need actually to transmit high-bandwidth information,

and wherein said Providing Dynamic Spectrum Allocation apparatus includes provision by each of said plurality of communicants of an indication of an anticipated time window in which wide band width applications are to be employed, thereby to reduce the required effective bandwidth by a factor of k, by separating the command and control information, having a low data rate, from payload information having a high data rate by including all communicants as part of a command and control network and if there are requirements to use high data rate, assigning a new spectrum to a relevant communicant for transmission of payload data including provision of a video channel dynamically for a dynamic modification of the individual communicant'"'"'s current spectrum allocation.

18. A method according to claim 17 wherein said communication services include provision of a Dynamic Spectrum Allocation control channel to at least one of the first plurality of communicants and wherein said Dynamic Spectrum Allocation apparatus is operative to receive, over the control channel, and recognize, at least one request from at least one individual communicant from among the first plurality of communicants for a dynamic modification of the individual communicant'"'"'s current spectrum allocation.

19. A method according to claim 18 wherein said Dynamic Spectrum Allocation control channel is a portion of an additional channel which is utilized in accordance with a protocol and said method includes modifying said protocol to support recognition of said request for a dynamic modification of a current spectrum allocation.

20. A method according to claim 17 and also comprising using said Dynamic Spectrum Allocation apparatus and said Satellite Communication apparatus for a satellite telephone application.

21. A method according to claim 17 and also comprising using said Dynamic Spectrum Allocation apparatus and said Satellite Communication apparatus for a mobile satellite application.

22. A method according to claim 17 and also comprising using said Dynamic Spectrum Allocation apparatus and said Satellite Communication apparatus for a satellite Internet application.

23. A method according to claim 17 wherein said indication of an anticipated time window comprises high/low band scheduling information, including a definition of the anticipated time window in which wide band width applications are to be employed, and/or an anticipated time window in which only narrow bandwidth applications are to be employed.

24. A method according to claim 17 wherein at any point during the task, only one communicant requires a high-bandwidth payload.

25. A computer program product, comprising a non-transitory tangible computer readable medium having computer readable program code embodied therein, the computer readable program code adapted to be executed to implement a method for providing communication using Satellite Communication apparatus operative for providing communication services to at least a first set of communicants, said first set of communicants including a first plurality of communicants, the method comprising:

providing communication services to each of said communicants in accordance with a spectrum allocation corresponding thereto, thereby to define a first plurality of spectrum allocations apportioning a first predefined spectrum portion among the first set of communicants; and

including

providing Dynamic Spectrum Allocation apparatus operative to dynamically modify, once per time period, wherein at least one time period is within an order of magnitude of no more than one minute, at least one spectrum allocation corresponding to at least one of the first plurality of communicants without exceeding said spectrum portion,

wherein said first set of communicants includes communicants which want to share bandwidth such that different communicants can communicate high definition images at different times and wherein said Dynamic Spectrum Allocation apparatus is operative to dynamically modify at least one spectrum allocation corresponding to at least one of the first plurality of communicants without exceeding said spectrum portion, so as to enable different communicants, from among said first set, to communicate high definition images at different times,

wherein plurality of communicants are all sent to a single high-bandwidth task, however, at any given time window, only a predetermined number of the communicants need actually to transmit high-bandwidth information,

and wherein said providing Dynamic Spectrum Allocation apparatus includes provision by each of said plurality of communicants of an indication of an anticipated time window in which wide band width applications are to be employed, thereby to reduce the required effective bandwidth by a factor of k, by separating the command and control information, having a low data rate, from payload information having a high data rate by including all communicants as part of a command and control network and if there are requirements to use high data rate, assigning a new spectrum to a relevant communicant for transmission of payload data including provision of a video channel dynamically for a dynamic modification of the individual communicant'"'"'s current spectrum allocation.