MSS user equipment and methods for synchronizing MSS user equipment
First Claim
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1. A method of operating a User Equipment (UE) for synchronizing in a Mobile Satellite System (MSS) having a plurality of satellites and a ground station, comprising the steps of:
- determining a position of the UE;
receiving information associated with a position of the satellite from a broadcast channel transmission of the ground station;
receiving a position of the ground station from said broadcast channel transmission of the ground station;
calculating a delay with said position of the UE, said information associated with said position of the satellite and said position of the ground station; and
adjusting a reference timing of the UE by said delay.
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Abstract
User Equipment (UE) and methods for UE synchronization are provided in accordance with the present invention. The UE is configured for operation in a Mobile Satellite System (MSS) that has satellites that are configured to couple the UE to a ground station. The UE includes a transceiver that is configured to couple the UE to at least one of the plurality of satellites and a controller coupled to the transceiver. The controller is configured to perform one or more operations that result in an adjustment of the UE timing reference.
39 Citations
40 Claims
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1. A method of operating a User Equipment (UE) for synchronizing in a Mobile Satellite System (MSS) having a plurality of satellites and a ground station, comprising the steps of:
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determining a position of the UE;
receiving information associated with a position of the satellite from a broadcast channel transmission of the ground station;
receiving a position of the ground station from said broadcast channel transmission of the ground station;
calculating a delay with said position of the UE, said information associated with said position of the satellite and said position of the ground station; and
adjusting a reference timing of the UE by said delay. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. User Equipment (UE) that is configured for operation in a Satellite System (MSS), the MSS having a plurality of satellites that are configured to couple the UE to a ground station, comprising:
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a transceiver that is configured to couple the UE to at least one of said plurality of satellites; and
a controller coupled to said transceiver, said controller configured to;
determine a position of the UE;
receive information associated with a position of the satellite from a broadcast channel transmission of the ground station;
receive a position of the ground station from said broadcast channel transmission of the ground station;
calculate a delay with said position of the UE, said information associated with said position of the satellite and said position of the ground station; and
adjust a reference timing of the UE by said delay. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of operating a UE for synchronizing in a MSS having the plurality of satellites and the ground station, comprising the steps of:
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receiving a timing signal transmitted by the ground station to at least one of the plurality of satellites and forwarded by said at least one of the plurality of satellites;
returning said timing signal to the ground station;
receiving a delay determined based in at least in part from a measurement of a period for said timing signal to travel from the ground station to the at least one of the plurality of satellites and from the at least one of said plurality of satellites to the UE; and
adjusting a reference timing of the UE by said delay. - View Dependent Claims (20, 21, 22, 23, 24)
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25. User Equipment (UE) that is configured for operation in a Satellite System (MSS), the MSS having a plurality of satellites that are configured to couple the UE to a ground station, comprising:
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a transceiver that is configured to couple the UE to at least one of said plurality of satellites; and
a controller coupled to said transceiver, said controller configured to;
receive a timing signal transmitted by the ground station to at least one of the plurality of satellites and forwarded by said at least one of the plurality of satellites;
return said timing signal to the ground station;
receive a delay determined based in at least in part from a measurement of a period for said timing signal to travel from the ground station to the at least one of the plurality of satellites and from the at least one of said plurality of satellites to the UE; and
adjust a reference timing of the UE by said delay. - View Dependent Claims (26, 27, 28, 29, 30)
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31. A method of operating a UE for synchronizing in a MSS having a plurality of satellites and a ground station, comprising the steps of:
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receiving a timing signal transmitted by the ground station and forwarded by at least one of the plurality of satellites, said timing signal having a first time of a reference time of the MSS corresponding to transmission of said timing signal by the ground station;
receiving a second time of said reference time of the MSS corresponding to said receiving said timing signal transmitted by the ground station and forwarded by at least one of the plurality of satellites;
determining a time delay that is based at least in part on said first time and said second time; and
adjusting a reference timing of the UE by said time delay. - View Dependent Claims (32, 33, 34, 35)
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36. User Equipment (UE) that is configured for operation in a Satellite System (MSS), the MSS having a plurality of satellites that are configured to couple the UE to a ground station, comprising:
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a transceiver that is configured to couple the UE to at least one of said plurality of satellites; and
a controller coupled to said transceiver, said controller configured to;
receive a timing signal transmitted by the ground station and forwarded by at least one of the plurality of satellites, said timing signal having a first time of a reference time of the MSS corresponding to transmission of said timing signal by the ground station;
receive a second time of said reference time of the MSS corresponding to said receiving said timing signal transmitted by the ground station and forwarded by at least one of the plurality of satellites;
determine a time delay that is based at least in part on said first time and said second time; and
adjust a reference timing of the UE by said time delay. - View Dependent Claims (37, 38, 39, 40)
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Specification