×

SYSTEMS AND METHODS FOR INTER-SYSTEM SHARING OF SATELLITE COMMUNICATIONS FREQUENCIES WITHIN A COMMON FOOTPRINT

  • US 20120009920A1
  • Filed: 09/21/2011
  • Published: 01/12/2012
  • Est. Priority Date: 09/11/2003
  • Status: Active Grant
First Claim
Patent Images

1. A frequency sharing system comprising:

  • a first satellite that communicates with first radioterminals using frequencies of a frequency band in a first service region; and

    a second satellite that communicates with second radioterminals using frequencies of the frequency band in a second service region that is contained within the first service region,wherein an antenna gain of the second satellite is greater than an antenna gain of the first satellite, the first satellite communicates with the first radioterminals by transmitting and receiving substantially first polarized electro-magnetic energy, the second satellite communicates with the second radioterminals by transmitting substantially second polarized electro-magnetic energy and at least one of the second radioterminals communicates with the second satellite by transmitting substantially third polarized electro-magnetic energy, wherein the first second and third polarized electro-magnetic energies are different from one another.

View all claims
  • 13 Assignments
Timeline View
Assignment View
    ×
    ×