Systems and methods for terrestrial reuse of cellular satellite frequency spectrum in a time-division duplex mode
First Claim
1. A satellite radiotelephone system comprising:
- a space-based component that is configured to receive wireless communications from radiotelephones in a satellite footprint over an uplink satellite radiotelephone frequency and to transmit wireless communications to the radiotelephones over a downlink satellite radiotelephone frequency; and
an ancillary terrestrial network that is configured to transmit wireless communications to, and receive wireless communications from, the radiotelephones over the downlink satellite radiotelephone frequency in a time-division duplex mode.
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0 Petitions
Accused Products
Abstract
A space-based component, such as a satellite, is configured to receive wireless communications from radiotelephones in a satellite footprint over an uplink satellite radiotelephone frequency, and to transmit wireless communications to the radiotelephones over a downlink radiotelephone frequency. An ancillary terrestrial network, that may include one or more ancillary terrestrial components, is configured to transmit wireless communications to, and receive wireless communications from, the radiotelephones over the downlink satellite radiotelephone frequency in a time-division duplex mode. By terrestrially transmitting and receiving wireless communications over the downlink satellite radiotelephone frequency in a time-division duplex mode, interference at the space-based component and/or at the gateway, by the ancillary terrestrial network and/or the radiotelephones due to terrestrial reuse of cellular satellite frequency spectrum, may be reduced or eliminated.
165 Citations
52 Claims
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1. A satellite radiotelephone system comprising:
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a space-based component that is configured to receive wireless communications from radiotelephones in a satellite footprint over an uplink satellite radiotelephone frequency and to transmit wireless communications to the radiotelephones over a downlink satellite radiotelephone frequency; and an ancillary terrestrial network that is configured to transmit wireless communications to, and receive wireless communications from, the radiotelephones over the downlink satellite radiotelephone frequency in a time-division duplex mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An ancillary terrestrial component for a satellite radiotelephone system that includes a space-based component that is configured to receive wireless communications from radiotelephones in a satellite footprint over an uplink satellite radiotelephone frequency and to transmit wireless communications to the radiotelephones over a downlink satellite radiotelephone frequency, the ancillary terrestrial component comprising:
an electronics system that is configured to transmit wireless communications to, and receive wireless communications from, the radiotelephones over the downlink satellite radiotelephone frequency in a time-division duplex mode. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A radiotelephone comprising:
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an electronics system that is configured to transmit wireless communications to a space-based component over an uplink satellite radiotelephone frequency and to receive wireless communications from the space-based component over a downlink satellite radiotelephone frequency; the electronics system further configured to transmit wireless communications to, and receive wireless communications from, an ancillary terrestrial component over the downlink satellite radiotelephone frequency in a time-division duplex mode. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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28. A satellite radiotelephone communication method comprising:
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receiving wireless communications at a space-based component from radiotelephones in a satellite footprint over an uplink satellite radiotelephone frequency; transmitting wireless communications from the space-based component to the radiotelephones over a downlink radiotelephone frequency; and transmitting wireless communications from an ancillary terrestrial network to the radiotelephones and transmitting wireless communications from the radiotelephones to the ancillary terrestrial network over the downlink satellite radiotelephone frequency in a time-division duplex mode. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36)
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37. A radiotelephone communication method comprising:
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transmitting wireless communications from an ancillary terrestrial network to radiotelephones and receiving wireless communications from the radiotelephones at the ancillary terrestrial network over a downlink satellite radiotelephone frequency in a time-division duplex mode, wherein the time-division duplex mode includes a frame including a plurality of slots, wherein at least a first one of the slots is used to transmit wireless communications from the ancillary terrestrial network to the radiotelephones over the downlink satellite radiotelephone frequency and wherein at least a second one of the slots is used to receive wireless communications from the radiotelephones at the ancillary terrestrial network over the downlink satellite radiotelephone frequency. - View Dependent Claims (38, 39, 40, 41)
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42. A radiotelephone communication method comprising:
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transmitting wireless communications from an ancillary terrestrial network to radiotelephones and receiving wireless communications from the radiotelephones at the ancillary terrestrial network over a downlink satellite radiotelephone frequency in a time-division duplex mode, wherein the time-division duplex mode includes a frame including a plurality of slots, wherein a first number of the slots is used to transmit wireless communications from the ancillary terrestrial network to the radiotelephones over the downlink satellite radiotelephone frequency and wherein a second number of the slots is used to receive wireless communications at the ancillary terrestrial network from the radiotelephones over the downlink satellite radiotelephone frequency, wherein the first number is greater than the second number.
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43. A radiotelephone communication method comprising:
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transmitting wireless communications from an ancillary terrestrial network to radiotelephones and receiving wireless communications from the radiotelephones at the ancillary terrestrial network over a downlink satellite radiotelephone frequency in a time-division duplex mode, wherein the time-division duplex mode includes a frame including a plurality of slots, wherein at least a first one of the slots is used to transmit wireless communications from the ancillary terrestrial network to the radiotelephones over the downlink satellite radiotelephone frequency using EDGE modulation and/or protocol and wherein at least a second one of the slots is used to receive wireless communications at the ancillary terrestrial network from the radiotelephones over the downlink satellite radiotelephone frequency using GPRS modulation and/or protocol.
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44. A radiotelephone communication method comprising:
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transmitting wireless communications from an ancillary terrestrial network to radiotelephones and receiving wireless communications from the radiotelephones at the ancillary terrestrial network over a downlink satellite radiotelephone frequency in a time-division duplex mode, wherein the time-division duplex mode includes a frame including a plurality of slots, wherein at least a first one of the slots is used to transmit wireless communications from the ancillary terrestrial network to the radiotelephones over the downlink satellite radiotelephone frequency using a first modulation and/or protocol and wherein at least a second one of the slots is used to receive wireless communications at the ancillary terrestrial network from the radiotelephones over the downlink satellite radiotelephone frequency using a second modulation and/or protocol, wherein the first modulation and/or protocol is more spectrally efficient than the second modulation and/or protocol.
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45. A radiotelephone communication method comprising:
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receiving wireless communications from an ancillary terrestrial network at radiotelephones and transmitting wireless communications from the radiotelephones to the ancillary terrestrial network over a downlink satellite radiotelephone frequency in a time-division duplex mode, wherein the time-division duplex mode includes a frame including a plurality of slots, wherein at least a first one of the slots is used to receive wireless communications from the ancillary terrestrial network at the radiotelephones over the downlink satellite radiotelephone frequency and wherein at least a second one of the slots is used to transmit wireless communications from the radiotelephones to the ancillary terrestrial network over the downlink satellite radiotelephone frequency. - View Dependent Claims (46, 47, 48, 49)
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50. A radiotelephone communication method comprising:
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receiving wireless communications from an ancillary terrestrial network at radiotelephones and transmitting wireless communications from the radiotelephones to the ancillary terrestrial network over a downlink satellite radiotelephone frequency in a time-division duplex mode, wherein the time-division duplex mode includes a frame including a plurality of slots, wherein a first number of the slots is used to receive wireless communications at the radiotelephones from the ancillary terrestrial network over the downlink satellite radiotelephone frequency and wherein a second number of the slots is used to transmit wireless communications from the radiotelephones to the ancillary terrestrial network over the downlink satellite radiotelephone frequency, wherein the first number is greater than the second number.
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51. A radiotelephone communication method comprising:
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receiving wireless communications from an ancillary terrestrial network at radiotelephones and transmitting wireless communications from the radiotelephones to the ancillary terrestrial network over a downlink satellite radiotelephone frequency in a time-division duplex mode, wherein the time-division duplex mode includes a frame including a plurality of slots, wherein at least a first one of the slots is used to receive wireless communications at the radiotelephones from the ancillary terrestrial network over the downlink satellite radiotelephone frequency using EDGE modulation and/or protocol and wherein at least a second one of the slots is used to transmit wireless communications from the radiotelephones to the ancillary terrestrial network over the downlink satellite radiotelephone frequency using GPRS modulation and/or protocol.
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52. A radiotelephone communication method comprising:
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receiving wireless communications from an ancillary terrestrial network at radiotelephones and transmitting wireless communications from the radiotelephones to the ancillary terrestrial network over a downlink satellite radiotelephone frequency in a time-division duplex mode, wherein the time-division duplex mode includes a frame including a plurality of slots, wherein at least a first one of the slots is used to receive wireless communications at the radiotelephone from the ancillary terrestrial network over the downlink satellite radiotelephone frequency using a first modulation and/or protocol and wherein at least a second one of the slots is used to transmit wireless communications from the radiotelephone to the ancillary terrestrial network over the downlink satellite radiotelephone frequency using a second modulation and/or protocol, wherein the first modulation and/or protocol is more spectrally efficient than the second modulation and/or protocol.
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Specification