Handover between ATC and satellite component of an integrated MSS/ATC system
First Claim
Patent Images
1. A communication system comprising:
- at least a first radio terminal comprising a first transceiver including at least a first receiver and at least a first transmitter that communicates by way of a satellite using a satellite frequency band;
at least a second radio terminal comprising a second transceiver including at least a second receiver and at least a second transmitter that communicates by way of the satellite using the satellite frequency band and that selectively communicates with the first radio terminal via a wireless terrestrial link using a portion of the satellite frequency band so as to terrestrially reuse the portion of the satellite frequency band;
a device, collocated with the first transceiver, that measures power received by the satellite over a frequency band from all sources including the wireless terrestrial link, and transmitted from the satellite to the first receiver; and
a controller that receives and processes said measurements to determine in which frequency channel within the satellite frequency band the second transmitter is to transmit.
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Abstract
A communications system comprising a first transceiver and a second transceiver, which system employs a device that measures power over a frequency band from sources other than those monitoring downlink radiation received at a radio terminal from the satellite, and a controller that receives these power measurements to determine on which frequency channel within a band a transmitter is to transmit.
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Citations
5 Claims
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1. A communication system comprising:
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at least a first radio terminal comprising a first transceiver including at least a first receiver and at least a first transmitter that communicates by way of a satellite using a satellite frequency band; at least a second radio terminal comprising a second transceiver including at least a second receiver and at least a second transmitter that communicates by way of the satellite using the satellite frequency band and that selectively communicates with the first radio terminal via a wireless terrestrial link using a portion of the satellite frequency band so as to terrestrially reuse the portion of the satellite frequency band; a device, collocated with the first transceiver, that measures power received by the satellite over a frequency band from all sources including the wireless terrestrial link, and transmitted from the satellite to the first receiver; and a controller that receives and processes said measurements to determine in which frequency channel within the satellite frequency band the second transmitter is to transmit. - View Dependent Claims (2, 3, 4)
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5. A communication system comprising:
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at least a first radio terminal comprising a first transceiver including at least a first receiver and at least a first transmitter that communicates by way of a satellite using a satellite frequency band; at least a second radio terminal comprising a second transceiver including at least a second receiver and at least a second transmitter that communicates by way of the satellite using the satellite frequency band and that selectively communicates with the first radio terminal via a wireless terrestrial link using a portion of the satellite frequency band so as to terrestrially reuse the portion of the satellite frequency band; said at least first transceiver communicating to said at least second transceiver power measurements received by the satellite over a frequency band from all sources including the wireless terrestrial link, and transmitted from the satellite to the first receiver; and a controller in said at least second transceiver that receives and processes said measurements to determine on which frequency channel within a band the at least second transmitter is to transmit.
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Specification