US 11,990,979 B2
Satellite MIMO system
Huiwen Yao, Potomac, MD (US); Abel Avellan, Coral Gables, FL (US); Sriram Jayasimha, Edinburgh (GB); and Zhi Zhong Yu, Reading (GB)
Assigned to AST & Science, LLC, Miami, FL (US)
Filed by AST & Science, LLC, Miami, FL (US)
Filed on Nov. 28, 2022, as Appl. No. 17/994,960.
Application 17/994,960 is a continuation of application No. 16/941,120, filed on Jul. 28, 2020, granted, now 11,515,935.
Claims priority of provisional application 62/884,951, filed on Aug. 9, 2019.
Claims priority of provisional application 62/936,955, filed on Nov. 18, 2019.
Prior Publication US 2023/0102838 A1, Mar. 30, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04B 7/185 (2006.01); H04B 7/01 (2006.01); H04B 7/0413 (2017.01); H04B 7/155 (2006.01)
CPC H04B 7/18521 (2013.01) [H04B 7/01 (2013.01); H04B 7/0413 (2013.01); H04B 7/1555 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A base station configured to communicate with a terminal station having a plurality of terminal station antennas, the base station comprising:
a set of directional antennas, each of the set of directional antennas configured for communication with one or more satellites that are in view of the terminal station, the communication including a first set of signals transmitted to the one or more satellites and a second set of signals received from the one or more satellites; and
a processing device operatively coupled to the set of directional antennas; the processing device being configured to:
adjust transmit times of physical resource blocks (PRBs) associated with the terminal station according to downlink arrival times for signals between the one or more satellites and the plurality of terminal station antennas so that a set of downlink signals from the one or more satellites to the terminal station are time aligned; and
cause the set of directional antennas to transmit the first set of signals to the one or more satellites and cause retransmission of the first set of signals as the set of downlink signals from the one or more satellites to the terminal station according to the adjusted transmit times of the PRBs;
wherein adjustment of the transmit times of the PRBs includes application of timing advances on each of the one or more satellites that are in view of the terminal station; and
wherein application of the timing advances is performed via different RF ports of the base station.