Mobile-link system for a radio communication system wherein diversity combining is performed only for edge/boundary zone signals and not for central zone signals
First Claim
1. A mobile-link system for a radio communication system comprising:
- a) a first mobile-link assembly having a first antenna coupled to a first receiver for receiving mobile uplink signals including central uplink signals transmitted from mobile stations located in a central zone of a coverage area and edge uplink signals transmitted from mobile stations located in an edge zone of said coverage area where said edge zone borders said central zone, and said receiver outputting central uplink signals and edge uplink signals;
b) a second mobile-link assembly having a second antenna coupled to a second receiver for receiving mobile uplink signals transmitted from mobile stations in said coverage area, said second antenna and second receiver outputting edge uplink signals transmitted by mobile stations located in said edge zone and not outputting central uplink signals transmitted by mobile stations located in said central zone, and said second mobile-link assembly for transmitting mobile downlink signals to at least said central and edge zones of said coverage area;
c) a combiner for diversity combining said edge uplink signals outputted by both said first receiver and said second receiver so as to produce diversity resultant signals corresponding to edge uplink signals received at said first and second mobile-link assemblies; and
d) wherein said first mobile-link assembly, second mobile-link assembly, and combiner predeterminedly provide diversity reception for mobile stations in said edge zone and not provide diversity reception for mobile stations in said central zone.
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Accused Products
Abstract
A mobile-link system for a radio communication system including a first mobile-link assembly, a second mobile-link assembly, and a satellite feeder-link assembly located in a satellite; and an earth feeder-link assembly located in an earth station. The first mobile-link assembly receives mobile uplink signals including zone-one uplink signals transmitted from mobile stations located in a first zone of a coverage area and zone-two uplink signals transmitted from mobile stations located in a second zone of the coverage area, and outputs received zone-one uplink signals and received zone-two uplink signals. The second mobile-link assembly receives mobile uplink signals transmitted from mobile stations in the coverage area, and outputs received zone-two uplink signals and not zone-one uplink signals. The second mobile link assembly also transmits mobile downlink signals to at least the first and second zones of the coverage area. The satellite feeder-link assembly conveys the received mobile uplink signals to the earth feeder-link assembly by transmitting feeder-link downlink signals corresponding to the received mobile uplink signals. The earth feeder-link assembly is connected to and couples the mobile-link system to a communication network. The earth feeder-link assembly includes a combiner for combining the feeder-link downlink signals such that the zone-two uplink signals received by the first and second mobile link assemblies are combined to produce diversity resultant signals.
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Citations
21 Claims
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1. A mobile-link system for a radio communication system comprising:
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a) a first mobile-link assembly having a first antenna coupled to a first receiver for receiving mobile uplink signals including central uplink signals transmitted from mobile stations located in a central zone of a coverage area and edge uplink signals transmitted from mobile stations located in an edge zone of said coverage area where said edge zone borders said central zone, and said receiver outputting central uplink signals and edge uplink signals; b) a second mobile-link assembly having a second antenna coupled to a second receiver for receiving mobile uplink signals transmitted from mobile stations in said coverage area, said second antenna and second receiver outputting edge uplink signals transmitted by mobile stations located in said edge zone and not outputting central uplink signals transmitted by mobile stations located in said central zone, and said second mobile-link assembly for transmitting mobile downlink signals to at least said central and edge zones of said coverage area; c) a combiner for diversity combining said edge uplink signals outputted by both said first receiver and said second receiver so as to produce diversity resultant signals corresponding to edge uplink signals received at said first and second mobile-link assemblies; and d) wherein said first mobile-link assembly, second mobile-link assembly, and combiner predeterminedly provide diversity reception for mobile stations in said edge zone and not provide diversity reception for mobile stations in said central zone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of linking a mobile-link system for a radio communication system with mobile stations, comprising:
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a) receiving at a first mobile link assembly having a first antenna coupled to a first receiver mobile uplink signals including central uplink signals transmitted from mobile stations located in a central zone of a coverage area and edge uplink signals transmitted from mobile stations located in an edge zone of said coverage area where said edge zone borders said central zone; b) outputting from said first receiver central uplink signals and edge uplink signals; c) receiving at a second mobile-link assembly having a second antenna coupled to a second receiver mobile uplink signals transmitted from mobile stations in said coverage area; d) outputting from said second receiver edge uplink signals transmitted by mobile stations located in said edge zone and not central uplink signals; e) transmitting from said second mobile-link assembly mobile downlink signals to at least said central and edge zones of said coverage area; f) diversity combining said edge uplink signals outputted by said first receiver and said second receiver so as to produce diversity resultant signals corresponding to edge uplink signals received at said first and second mobile-link assemblies; and g) wherein diversity reception is predeterminedly provided for mobile stations in said edge zone and not provided for mobile stations in said central zone. - View Dependent Claims (17, 18, 19, 20, 21)
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Specification