Systems and methods for controlling a cellular communications system responsive to a power level associated with a wireless transmitter

• US 8,023,954 B2
• Filed: 08/12/2009
• Issued: 09/20/2011
• Est. Priority Date: 09/14/2001
• Status: Expired due to Fees

• Current Assignee: ATC Technology Corporation (FedEx Corporation)
• Original Assignee: ATC Technology Corporation (FedEx Corporation)
• Inventors: Karabinis, Peter D.
• Primary Examiner(s): Nguyen; Tu
• Application Number:
  US12/540,054
• Publication Number:
  US 20100035605A1
• Time in Patent Office: 769 Days
• Field of Search: 455/13.1, 455/427, 455/430, 455/446, 455/447
• US Class Current: 455/447
• CPC Class Codes: H04B 7/18513 Transmission in a satellite or space-based system
• 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: H04B 7/18563 Arrangements for interconnecting multiple systems data switching networks H04L12/00
• CPC Class Codes: H04B 7/216 Code division or spread-spectrum multiple access [CDMA, SSMA]

Abstract

A cellular communications system includes a wireless transmitter that is configured to transmit over a set of frequencies that is assigned to a given cell of the cellular communications system from a band of frequencies that is assigned to the cellular communications system. A controller is configured to identify a power level to be used by the wireless transmitter and to determine a subset of frequencies in the set of frequencies that is assigned to the given cell of the cellular communications system, the subset of frequencies to be assigned to the wireless transmitter responsive to the power level that was identified. Related methods are also described.

Claims

1. A method of controlling a cellular communications system, the method comprising:

identifying a power level to be used by a wireless transmitter of the cellular communications system, the wireless transmitter configured to transmit over a set of frequencies that is assigned to a given cell of the cellular communications system in a band of frequencies that is assigned to the cellular communications system;

determining a subset of frequencies in the set of frequencies that is assigned to the given cell, the subset of frequencies to be assigned to the wireless transmitter responsive to the identified power level to be used by the wireless transmitter;

assigning the subset of frequencies in the set of frequencies that is assigned to the given cell to the wireless transmitter for transmission at the identified power level; and

wherein the set of frequencies that is assigned to the given cell of the cellular communications system is in a satellite band of frequencies.

2. A method according to claim 1 wherein the wireless receiver is a wireless transceiver and wherein the determining is further responsive to a detection of a signal from the wireless transceiver.

3. A method according to claim 2 wherein the detection is performed by a base station serving the wireless transmitter.

4. A method according to claim 1 wherein the determining is further responsive to a distance of the wireless transmitter from a base station serving the wireless transmitter.

5. A method according to claim 1 further comprising:

transmitting by the wireless transmitter over at least one frequency in the subset of frequencies that was assigned, at the identified power level.

6. A cellular communications system comprising:

a wireless transmitter that is configured to transmit over a set of frequencies that is assigned to a given cell of the cellular communications system in a band of frequencies that is assigned to the cellular communications system;

a controller that is configured to identify a power level to be used by the wireless transmitter and to determine a subset of frequencies in the set of frequencies that is assigned to the given cell of the cellular communications system, the subset of frequencies to be assigned to the wireless transmitter responsive to the power level that was identified; and

wherein the set of frequencies that is assigned to the given cell of the cellular communications system is in a satellite band of frequencies.

7. A system according to claim 6 wherein the wireless receiver is a wireless transceiver and wherein the controller is further configured to determine the subset of frequencies responsive to a detection of a signal from the wireless transceiver.

8. A system according to claim 7 wherein the detection is performed by a base station serving the wireless transmitter.

9. A system according to claim 6 wherein the controller is further configured to determine the subset of frequencies responsive to a distance of the wireless transmitter from a base station serving the wireless transmitter.

10. A system according to claim 6 wherein the wireless transmitter is further configured to transmit over at least one frequency in the subset of frequencies that was assigned, at the power level that was identified.