Integrated or autonomous system and method of satellite-terrestrial frequency reuse using signal attenuation and/or blockage, dynamic assignment of frequencies and/or hysteresis

• US 7,907,893 B2
• Filed: 09/28/2006
• Issued: 03/15/2011
• Est. Priority Date: 08/02/2000
• Status: Active Grant

• Current Assignee: ATC Technology Corporation (FedEx Corporation)
• Sponsoring Entity: ATC Technology Corporation (FedEx Corporation)
• Inventors: Singh, Rajendra, Karabinis, Peter D.
• Primary Examiner(s): Anderson; Matthew D
• Assistant Examiner(s): Safaipour; Bobbak
• APPLICATION: US 20070021060A1
• Time in USPTO: 1629 Days
• Field of Search: 455/12.1, 455/435.2, 455/426.1, 455/427, 455/429, 455/430, 455/431, 455/447, 455/448, 455/439, 455/442
• US Class Current: 455/12.1
• CPC Class Codes: H04B 7/18563 : Arrangements for interconnecting multiple systems data switching networks H04L12/00
• CPC Class Codes: H04B 7/2041 : Spot beam multiple access
• CPC Class Codes: H04W 16/14 : Spectrum sharing arrangements between different networks

Abstract

A cellular communications system comprising a space based system comprising a first set of cells, and a ground based system comprising a second set of cells. The space and ground systems can optionally function substantially autonomously, with each using spectrum from at least one predetermined frequency band.

Claims

1. A method of establishing communications between a terminal and a hybrid communications system comprising a space based system and a ground based system;

the space based and ground based systems providing wireless communications using respective first and second sets of frequencies of at least one satellite frequency band while being configured to function substantially autonomously therebetween;

the method comprising;

transmitting a signal by a terminal to the hybrid communications system;

determining by the hybrid communications system based on at least the transmitted signal an identity of the terminal;

assigning to the terminal a communications channel responsive to the identity of the terminal; and

establishing communications between the terminal and the hybrid communications system over the communications channel that was assigned;

wherein the assigning to the terminal a communications channel responsive to the identity of the terminal comprises preferentially assigning to the terminal a communications channel that is associated with the ground based system responsive to the identity of the terminal, notwithstanding that the terminal is configured to communicate with both the space based system and the ground based system; and

wherein the establishing communications between the terminal and the hybrid communications system over the communications channel that was assigned comprises preferentially establishing communications between the terminal and the ground based system responsive to the identity of the terminal, notwithstanding that the terminal is configured to communicate with both the space based system and the ground based system.

2. A hybrid communications system comprising a space based system and a ground based system;

wherein the space based and ground based systems are configured to provide wireless communications using respective first and second sets of frequencies of at least one satellite frequency band while being configured to function substantially autonomously therebetween;

wherein the hybrid communications system is configured to determine an identity of a terminal from at least a signal transmitted by the terminal, to assign to the terminal a communications channel responsive to the identity of the terminal, and to establish communications with the terminal over the channel that was assigned;

wherein the hybrid communications system is configured to assign to the terminal a communications channel responsive to the identity of the terminal by preferentially assigning to the terminal a communications channel that is associated with the ground based system responsive to the identity of the terminal, notwithstanding that the terminal is configured to communicate with both the space based system and the ground based system; and

wherein the hybrid communications system is further configured to establish communications with the terminal over the channel that was assigned by preferentially establishing communications between the terminal and the ground based system responsive to the identity of the terminal, notwithstanding that the terminal is configured to communicate with both the space based system and the ground based system.

3. A method of establishing communications between a terminal and a space based system or between the terminal and a ground based system;

the space based and ground based systems providing wireless communications using respective first and second sets of frequencies of at least one satellite frequency band while being configured to function substantially autonomously therebetween;

the method comprising;

transmitting a signal by the terminal;

determining based on at least the transmitted signal an identity of the terminal;

assigning to the terminal a communications channel responsive to the identity of the terminal; and

establishing communications between the terminal and the space based system or between the terminal and the ground based system over the communications channel that was assigned using the first and/or second sets of frequencies of the at least one satellite frequency band;

wherein the assigning to the terminal a communications channel responsive to the identity of the terminal comprises preferentially assigning to the terminal a communications channel that is associated with the ground based system responsive to the identity of the terminal, notwithstanding that the terminal is configured to communicate with both the space based system and the ground based system; and

wherein the establishing communications between the terminal and the space based system or between the terminal and the ground based system over the communications channel that was assigned comprises preferentially establishing communications between the terminal and the ground based system responsive to the identity of the terminal, notwithstanding that the terminal is configured to communicate with both the space based system and the ground based system.

4. A wireless communications system comprising:

a ground based system that is associated with a space based system;

wherein the ground based system is configured to provide wireless communications using frequencies of at least one satellite frequency band while being configured to function substantially autonomously from the associated space based system; and

wherein the ground based system is configured to determine an identity of a terminal from at least a signal that is transmitted by the terminal using frequencies of the at least one satellite frequency band, to assign to the terminal a communications channel responsive to the identity of the terminal or refrain from assigning to the terminal a communications channel responsive to the identify of the terminal, and to establish communications with the terminal over the channel that was assigned responsive to the identity of the terminal using frequencies of the at least one satellite frequency band;

wherein the ground based system is configured to assign to the terminal a communications channel responsive to the identity of the terminal by preferentially assigning to the terminal a communications channel that is associated with the ground based system responsive to the identity of the terminal, notwithstanding that the terminal is configured to communicate with both the space based system and the ground based system; and

wherein the ground based system is configured to establish communications with the terminal over the communications channel that was assigned by preferentially establishing communications between the terminal and the ground based system responsive to the identity of the terminal, notwithstanding that the terminal is configured to communicate with both the space based system and the ground based system.

5. A wireless communications system comprising:

a space based system that is associated with a ground based system;

wherein the space based system is configured to provide wireless communications using frequencies of at least one satellite frequency band while being configured to function substantially autonomously from the associated ground based system; and

wherein the space based system is configured to determine an identity of a terminal from at least a signal that is transmitted by the terminal using frequencies of the at least one satellite frequency band, to assign to the terminal a communications channel responsive to the identity of the terminal or refrain from assigning to the terminal a communications channel responsive to the identify of the terminal, and to establish communications with the terminal over the channel that was assigned responsive to the identity of the terminal using frequencies of the at least one satellite frequency band;

wherein the space based system is configured to assign to the terminal a communications channel responsive to the identity of the terminal by preferentially assigning to the terminal a communications channel that is associated with the space based system responsive to the identity of the terminal, notwithstanding that the terminal is configured to communicate with both the space based system and the ground based system; and

wherein the space based system is configured to establish communications with the terminal over the channel that was assigned by preferentially establishing communications between the terminal and the space based system responsive to the identity of the terminal, notwithstanding that the terminal is configured to communicate with both the space based system and the ground based system.