Method and apparatus for beam management in a satellite communic

Details Method and apparatus for beam management in a satellite communic Method and apparatus for beam management in a satellite communic

1998-01-05

2000-06-27

Hellner, Mark

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a satellite

455 133, H04B 7185

Patent

active

060812273

ABSTRACT:
A method (400, FIG. 4) for beam management in a satellite communication system (10) which simplifies cell-to-cell hand-offs within a footprint (90) of a satellite (20) and between two or more satellites (20) is disclosed. The method includes the steps of providing multiple beam stripes (130, FIG. 2) extending across the footprint (90) in a direction corresponding to the direction of flight (60) of the satellite, grouping the beam stripes (130) into one or more beam groups (150, FIG. 3), and selectively associating hardware groups (300) comprised of hardware resources to support beam groups (150). Method (400) also can include steps (450-470) for determining and compensating for undesirable system effects arising as a result of the relative motion of the Earth (50, FIG. 1) with respect to satellites (20) of system (10). A satellite (20, FIGS. 10 and 11) designed and configured to execute method (400) also is disclosed.

REFERENCES:
patent: 5268694 (1993-12-01), Jan et al.
patent: 5408237 (1995-04-01), Patterson et al.
patent: 5422647 (1995-06-01), Hirshfield et al.
patent: 5621415 (1997-04-01), Tuck
patent: 5668556 (1997-09-01), Rouffet et al.
patent: 5736959 (1998-04-01), Patterson et al.
patent: 5738309 (1998-04-01), Fowell
patent: 5739784 (1998-04-01), Jan et al.
PCT International Search Report, International application No. PCT/US 99/00003, International Filing Date Apr. 1, 1999.

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