Terrestrial Communications Networks That Transmit Using Circular Polarization

• US 20090075645A1
• Filed: 11/14/2008
• Published: 03/19/2009
• Est. Priority Date: 07/28/2003
• Status: Abandoned Application

• Current Assignee: ATC Technology Corporation (FedEx Corporation)
• Original Assignee: ATC Technology Corporation (FedEx Corporation)
• Inventors: Karabinis, Peter D.
• Application Number:
  US12/271,381
• Publication Number:
  US 20090075645A1
• Time in Patent Office: Days
• US Class Current: 455/422.100
• CPC Class Codes: H04B 7/18543 for adaptation of transmission parameters, e.g. power control for detecting or preventing errors in the information received H04L1/00
• CPC Class Codes: H04W 16/12 Fixed resource partitioning
• CPC Class Codes: H04W 16/30 Special cell shapes, e.g. doughnuts or ring cells

Abstract

A terrestrial communications network may be configured to wirelessly communicate with a plurality of radiotelephones. The terrestrial communications network may include a plurality of base stations that are configured to wirelessly communicate with the plurality of radiotelephones. Moreover, the plurality of base stations may include at least one base station that is configured to transmit information to at least one radiotelephone using a circularly polarized antenna. Related methods are also discussed.

Claims

1. A terrestrial communications network that is configured to wirelessly communicate with a plurality of radiotelephones, the terrestrial communications network comprising:

a plurality of base stations that are configured to wirelessly communicate with the plurality of radiotelephones, the plurality of base stations including at least one base station that is configured to transmit information to at least one radiotelephone using a circularly polarized antenna.

2. A terrestrial communications network according to claim 1 wherein the at least one base station receives information from at least one radiotelephone using a polarization diversity and/or a space diversity antenna configuration.

3. A terrestrial communications network according to claim 1 wherein the at least one base station transmits information using a FDM/FDMA, TDM/TDMA, CDM/CDMA and/or OFDM/OFDMA air interface protocol and/or architecture.

4. A terrestrial communications network according to claim 1 wherein the at least one base station transmits information using at least one frequency that is also used by a satellite system.

5. A terrestrial communications network according to claim 1 wherein the circularly polarized antenna is configured to transmit using substantially Left-Hand Circular Polarization (LCHP).

6. A wireless communications method comprising:

configuring a plurality of base stations to wirelessly communicate with a plurality of radiotelephones;

configuring at least one base station of the plurality of base stations with a circularly polarized antenna; and

transmitting information to at least one radiotelephone using the circularly polarized antenna.

7. A method according to claim 6 further comprising:

receiving information at the at least one base station from at least one radiotelephone using a polarization diversity and/or a space diversity antenna configuration.

8. A method according to claim 6 wherein transmitting information comprises:

using a FDM/FDMA, TDM/TDMA, CDM/CDMA and/or OFDM/OFDMA air interface protocol and/or architecture.

9. A method according to claim 6 wherein transmitting information comprises:

using at least one frequency that is also being used by a satellite system.

10. A method according to claim 6 wherein the circularly polarized antenna is a left-hand circularly polarized antenna.

11. A method according to claim 6 wherein transmitting information to the at least one radiotelephone comprises transmitting information to the at least one radiotelephone using the circularly polarized antenna using substantially Left-Hand Circular Polarization (LHCP).