SATELLITE COMMUNICATION SYSTEM, LEO SATELLITE RELAYING COMMUNICATIONS BETWEEN A GEO SATELLITE AND TERRESTRIAL STATIONS, THE UPLINKS AND DOWNLINKS USING THE SAME FREQUENCY BAND AND TIME-DIVISION MULTIPLEXING
First Claim
1. A payload for a repeater satellite in a telecommunication system, said repeater satellite being intended to be put into traveling orbit above the surface of Earth, and the payload being configured to repeat data received from a stationary satellite above the surface of Earth to a terminal that is substantially on the surface of Earth, and to repeat data received from the terminal to the stationary satellite, wherein said payload is further configured to use a same frequency band for repeating data to the stationary satellite, referred to as an uplink transmission, and for repeating data to the terminal, referred to as a downlink transmission, said frequency band being any one of the bands VHF, UHF, L, S, C, X, Ka or Q, and configured to perform the uplink transmissions and the downlink transmissions during different intervals of time.
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0 Petitions
Accused Products
Abstract
A payload for a repeater satellite of a communication system. The repeater satellite being placed into drift orbit above the surface of a celestial body. The payload being configured to repeat data received from a stationary satellite above the surface of the celestial body towards a terminal substantially at the surface of the celestial body, and to repeat data received from the terminal towards the stationary satellite. The payload is further configured to use a single frequency band for repeating data towards the stationary satellite, referred to as uplink transmission, and for repeating data towards the terminal, referred to as downlink transmission, as well as to time-division
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Citations
16 Claims
- 1. A payload for a repeater satellite in a telecommunication system, said repeater satellite being intended to be put into traveling orbit above the surface of Earth, and the payload being configured to repeat data received from a stationary satellite above the surface of Earth to a terminal that is substantially on the surface of Earth, and to repeat data received from the terminal to the stationary satellite, wherein said payload is further configured to use a same frequency band for repeating data to the stationary satellite, referred to as an uplink transmission, and for repeating data to the terminal, referred to as a downlink transmission, said frequency band being any one of the bands VHF, UHF, L, S, C, X, Ka or Q, and configured to perform the uplink transmissions and the downlink transmissions during different intervals of time.
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12. A telecommunication method for transferring data between a terminal, situated substantially on the surface of a celestial body, and a stationary satellite above the surface of the celestial body, the data transfer between said terminal and said stationary satellite being performed by a repeater satellite configured to repeat data received from said stationary satellite to said terminal and to repeat data received from said terminal to said stationary satellite, comprising the steps of:
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repeating data to the stationary satellite, referred to as an uplink transmission and repeating data to the terminal, referred to as a downlink transmission by the repeater satellite utilizing a same frequency band, said frequency band being any one of the band VHF, UHF, L, S, C, X, Ka or Q; and performing the uplink transmissions and the downlink transmissions during different intervals of time by the repeater satellite. - View Dependent Claims (13, 14, 15, 16)
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Specification