MULTI-BEAM COMMUNICATION SYSTEM AND METHOD
First Claim
1. A method for accommodating changes in capacity requirements in the service area of at least one satellite comprising:
- subdividing the service area into at least two interleaved sets of cells;
assigning one of two orthogonal polarizations to each set of cells, such that adjacent cells from different sets alternate in polarization;
providing for flexible allocation of satellite transmit power to one or more cells in at least a first set of cells;
providing for flexible allocation of bandwidth and frequency to one or more cells in, at least, the first set of cells, and providing that no two adjacent cells within the sets of cells share a common frequency at any given time; and
,reallocating satellite transmit power, bandwidth and frequency among the cells of at least the first set of cells, independently of the satellite transmit power, bandwidth and frequencies of the cells in other sets of cells, in response to changes in capacity requirements in the service area.
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Accused Products
Abstract
A method of flexibly allocating capacity in a satellite coverage area, comprising establishing a frequency reuse pattern of at least two interleaved sets of cells, assigning a polarization to each set of cells, such that adjacent sets of cells alternate in orthogonal polarization, flexibly assigning satellite transmit power to at least one cell, flexibly assigning frequency and bandwidth to at least one cell, and moving frequencies, bandwidths, and satellite transmit power among the cells within each set, independently of the other sets, ensuring that at all times no two adjacent cells within a given set share a common frequency.
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Citations
32 Claims
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1. A method for accommodating changes in capacity requirements in the service area of at least one satellite comprising:
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subdividing the service area into at least two interleaved sets of cells; assigning one of two orthogonal polarizations to each set of cells, such that adjacent cells from different sets alternate in polarization; providing for flexible allocation of satellite transmit power to one or more cells in at least a first set of cells; providing for flexible allocation of bandwidth and frequency to one or more cells in, at least, the first set of cells, and providing that no two adjacent cells within the sets of cells share a common frequency at any given time; and
,reallocating satellite transmit power, bandwidth and frequency among the cells of at least the first set of cells, independently of the satellite transmit power, bandwidth and frequencies of the cells in other sets of cells, in response to changes in capacity requirements in the service area. - View Dependent Claims (2, 3, 4)
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5. (canceled)
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6. (canceled)
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7. A method for accommodating changes in capacity requirements in a service area covered by at least two orbital slots, the method comprising:
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subdividing the service area into at least two interleaved sets of cells; providing for at least two sets of beams from a first satellite in a first orbital slot to service at least two of the interleaved sets of cells; assigning a polarization to each set of beams from the at least one satellite in the first orbital slot, such that the sets of beams servicing the interleaved sets of cells from the first orbital slot alternate in polarization; providing for at least one set of beams from a second satellite in a second orbital slot to service at least one of the at least two interleaved sets of cells; assigning a polarization to each set of beams from the second satellite such that the sets of beams servicing interleaved sets of cells from the second orbital slot alternate in polarization, and such that, for a set of cells serviced by two sets of beams from the first and second orbital slots, the two sets of beams are of orthogonal polarization; providing for flexible allocation of satellite transmit power to at least one cell; providing for flexible allocation of bandwidth and frequency to at least one cell, and providing that no two beams from a common orbital slot servicing two adjacent cells within a set of cells share a common frequency at any given time; and
,reallocating satellite transmit power, bandwidth and frequency among the cells of at least one set of cells serviced from the first orbital slot, independently of the satellite transmit power, bandwidth and frequencies of the cells in other sets of cells serviced from the first orbital slot, and independently of the satellite transmit power, bandwidth and frequencies of the cells in all sets of cells serviced from the second orbital slot, in response to changes in capacity requirements in the service area.
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8. A method for accommodating changes in capacity requirements in a service area covered by at least two orbital slots, the method comprising:
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subdividing the service area into at least two interleaved sets of cells; providing for at least two sets of beams from a first satellite in a first orbital slot to service at least two of the interleaved sets of cells; assigning a polarization to each set of beams from the at least one satellite in the first orbital slot, such that the sets of beams servicing the interleaved sets of cells from the first orbital slot alternate in polarization; providing for at least one set of beams from a second satellite in a second orbital slot to service at least one of the at least two interleaved sets of cells; assigning a polarization to each set of beams from the second satellite such that the sets of beams servicing interleaved sets of cells from the second orbital slot alternate in polarization, and such that, for a set of cells serviced by two sets of beams from the first and second orbital slots, the two sets of beams have the same polarization; providing for flexible allocation of satellite transmit power to at least one cell; providing for flexible allocation of bandwidth and frequency to at least one cell, and providing that no two beams from a common orbital slot servicing two adjacent cells within a set of cells share a common frequency at any given time; and
,reallocating satellite transmit power, bandwidth and frequency among the cells of at least one set of cells serviced from the first orbital slot, independently of the satellite transmit power, bandwidth and frequencies of the cells in other sets of cells serviced from the first orbital slot, and independently of the satellite transmit power, bandwidth and frequencies of the cells in all sets of cells serviced from the second orbital slot, in response to changes in capacity requirements in the service area.
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9. A method of using a flexible frequency reuse pattern to accommodate changing capacity requirements in a satellite service area wherein the method comprises:
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establishing a flexible frequency reuse pattern comprising at least two interleaved sets of co-polarized cells, wherein no two adjacent cells of a single set may share a common frequency, and wherein the polarization of each set of cells is orthogonal to the polarization of the adjacent interleaved sets of cells; and
,reallocating satellite transmit power, bandwidth and frequency among the cells of at least one set, independently of the satellite transmit power, bandwidth and frequencies of other sets, in response to changes in capacity requirements in the service area. - View Dependent Claims (10)
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11. (canceled)
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12. (canceled)
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13. (canceled)
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14. A transmitting system for transmitting to at least a part of a set of cells within a frequency reuse pattern for a multi-beam satellite communications system, comprising:
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a flexible filtering stage, having an uplink input, and a plurality of outputs for transmitting signals from the flexible filtering stage, wherein the flexible filtering stage is configured to flexibly allocate frequencies and bandwidths among the outputs; a flexible amplification stage coupled to the outputs of the flexible filtering stage for variably amplifying the signals provided at each of the plurality of outputs; and
,a plurality of co-polarized polarizing antenna feeds coupled to the flexible amplification stage for transmitting the amplified signals as beams to a co-polarized set of cells, wherein the transmitting system allocates and reallocates frequencies, bandwidths, and satellite transmit power levels among the cells of the set of cells in response to capacity requirements on the ground. - View Dependent Claims (15, 16, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 31)
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17. (canceled)
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30. (canceled)
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32. (canceled)
Specification