Method for allocating radio resources in a communication system using non-GSO satellites with interference level constraint to a geostationary system
First Claim
1. A method for allocating radio resources for setting up satellite communications in a first communication system comprising a constellation of non-geostationary (non-GSO) satellites and a first set of terminals, the method comprising the following steps, for each terminal of the first set of terminals:
- determining a distinct separation angle threshold to be observed with respect to a constellation of geostationary satellites, a separation angle being defined as the smallest topocentric angle by which a given non-GSO satellite and any geostationary satellite of the geostationary arc are seen from a given terminal of the first set of terminals,authorising the terminal to set up a communication link with a non-GSO satellite if the separation angle associated with said link is greater than or equal to the separation angle threshold,wherein determining a distinct separation angle threshold for each terminal comprises;
computing at least one interfering power level generated by the set of communication links between the terminals of the first set of terminals and the non-GSO satellites towards a geostationary satellite communication system, the interfering power level being a function of all distinct separation angle thresholds of all terminals of the first set, anditeratively selecting, independently for each terminal of the first set of terminals, a minimum value of the distinct separation angle threshold to be observed by the terminal such that said at least one computed interfering power level remains in accordance with a regulatory limit.
1 Assignment
0 Petitions
Accused Products
Abstract
A method for allocating radio resources for setting up satellite communications in a first communication system comprising a constellation of non-GSO satellites and a first set of terminals, the method comprises the following steps, for each terminal of the first set: determining a distinct separation angle threshold to be observed with respect to a constellation of geostationary satellites, a separation angle being defined as the smallest topocentric angle by which a given non-GSO satellite and any geostationary satellite of the geostationary arc are seen from a given terminal of the first set, authorizing the terminal to set up a communication link with a non-GSO satellite if the separation angle associated with the link is greater than or equal to the separation angle threshold.
-
Citations
19 Claims
-
1. A method for allocating radio resources for setting up satellite communications in a first communication system comprising a constellation of non-geostationary (non-GSO) satellites and a first set of terminals, the method comprising the following steps, for each terminal of the first set of terminals:
-
determining a distinct separation angle threshold to be observed with respect to a constellation of geostationary satellites, a separation angle being defined as the smallest topocentric angle by which a given non-GSO satellite and any geostationary satellite of the geostationary arc are seen from a given terminal of the first set of terminals, authorising the terminal to set up a communication link with a non-GSO satellite if the separation angle associated with said link is greater than or equal to the separation angle threshold, wherein determining a distinct separation angle threshold for each terminal comprises; computing at least one interfering power level generated by the set of communication links between the terminals of the first set of terminals and the non-GSO satellites towards a geostationary satellite communication system, the interfering power level being a function of all distinct separation angle thresholds of all terminals of the first set, and iteratively selecting, independently for each terminal of the first set of terminals, a minimum value of the distinct separation angle threshold to be observed by the terminal such that said at least one computed interfering power level remains in accordance with a regulatory limit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. A device for allocating radio resources for setting up satellite communications comprising means, including at least one processor and one memory, configured to implement a method for allocating radio resources for setting up satellite communications in a first communication system comprising a constellation of non-geostationary (non-GSO) satellites and a first set of terminals, the method comprising the following steps, for each terminal of the first set of terminals:
-
determining a distinct separation angle threshold to be observed with respect to a constellation of geostationary satellites, a separation angle being defined as the smallest topocentric angle by which a given non-GSO satellite and any geostationary satellite of the geostationary arc are seen from a given terminal of the first set of terminals, authorising the terminal to set up a communication link with a non-GSO satellite if the separation angle associated with said link is greater than or equal to the separation angle threshold, wherein determining the distinct separation angle threshold for each terminal comprises; computing at least one interfering power level generated by the set of communication links between the terminals of the first set of terminals and the non-GSO satellites towards a geostationary satellite communication system, the interfering power level being a function of all distinct separation angle thresholds of all terminals of the first set, and iteratively selecting, independently for each terminal of the first set of terminals, a minimum value of the distinct separation angle threshold to be observed by the terminal such that said at least one computed interfering power level remains in accordance with a regulatory limit.
-
-
18. A computer program comprising instructions stored on a tangible non-transitory storage medium for executing on a processor a method for allocating radio resources for setting up satellite communications in a first communication system comprising a constellation of non-geostationary (non-GSO) satellites and a first set of terminals, the method comprising the following steps, for each terminal of the first set of terminals:
-
determining a distinct separation angle threshold to be observed with respect to a constellation of geostationary satellites, a separation angle being defined as the smallest topocentric angle by which a given non-GSO satellite and any geostationary satellite of the geostationary arc are seen from a given terminal of the first set of terminals, authorising the terminal to set up a communication link with a non-GSO satellite if the separation angle associated with said link is greater than or equal to the separation angle threshold, wherein determining the distinct separation angle threshold for each terminal comprises; computing at least one interfering power level generated by the set of communication links between the terminals of the first set of terminals and the non-GSO satellites towards a geostationary satellite communication system, the interfering power level being a function of all distinct separation angle thresholds of all terminals of the first set, and iteratively selecting, independently for each terminal of the first set of terminals, a minimum value of the distinct separation angle threshold to be observed by the terminal such that said at least one computed interfering power level remains in accordance with a regulatory limit.
-
-
19. A tangible non-transitory processor-readable recording medium on which is recorded a program comprising instructions for executing a method for allocating radio resources for setting up satellite communications in a first communication system comprising a constellation of non-GSO satellites and a first set of terminals, the method comprising the following steps, for each terminal of the first set of terminals:
-
determining a distinct separation angle threshold to be observed with respect to a constellation of geostationary satellites, a separation angle being defined as the smallest topocentric angle by which a given non-geostationary (non-GSO) satellite and any geostationary satellite of the geostationary arc are seen from a given terminal of the first set of terminals, authorising the terminal to set up a communication link with a non-GSO satellite if the separation angle associated with said link is greater than or equal to the separation angle threshold, wherein determining the distinct separation angle threshold for each terminal comprises; computing at least one interfering power level generated by the set of communication links between the terminals of the first set of terminals and the non-GSO satellites towards a geostationary satellite communication system, the interfering power level being a function of all distinct separation angle thresholds of all terminals of the first set, and iteratively selecting, independently for each terminal of the first set of terminals, a minimum value of the distinct separation angle threshold to be observed by the terminal such that said at least one computed interfering power level remains in accordance with a regulatory limit.
-
Specification