Multiple return link

• US 8,428,000 B2
• Filed: 07/16/2010
• Issued: 04/23/2013
• Est. Priority Date: 04/05/2005
• Status: Active Grant

• Current Assignee: SkyBitz, Inc. (Ametek Incorporated)
• Original Assignee: SkyBitz, Inc. (Ametek Incorporated)
• Inventors: Battista, Rich, Brosius, Jay, Shankar, Uday
• Primary Examiner(s): Doan, Kiet
• Assistant Examiner(s): Vu, Michael T
• Application Number:
  US12/837,800
• Publication Number:
  US 20100284324A1
• Time in Patent Office: 1,012 Days
• Field of Search: 370/321, 370/316, 370/325, 370/335, 370/320, 370/342, 370/305, 455/427, 455/428, 455/430, 455/447, 455/504
• US Class Current: 370/321
• CPC Class Codes: H04B 7/18513 Transmission in a satellite or space-based system
• CPC Class Codes: H04B 7/18539 Arrangements for managing radio, resources, i.e. for establishing or releasing a connection
• 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 7/18545 Arrangements for managing station mobility, i.e. for station registration or localisation
• CPC Class Codes: H04B 7/18554 using the position provided by an existing geolocalisation system

Abstract

A system and method for improving efficiency of satellite communications is described. In one embodiment, multiple return links are associated with a single forward link to reduce communications costs.

Claims

1. A method, comprising:

transmitting a message on one of a plurality of slots on a single forward satellite link for receipt by a plurality of mobile terminals, said transmitted message communicating an inquiry to each of said plurality of mobile terminals; and

receiving a response from each of said plurality of mobile terminals, each of said plurality of responses including information generated in response to said transmitted message on said one of said plurality of slots on said single forward link, each of said plurality of responses being carried on a specified slot on a corresponding one of a plurality of separate return satellite links and, wherein each said specified slot on said corresponding plurality of separate return satellite links is offset by the same amount from said one of said plurality of slots on said single forward satellite link.

2. The method of claim 1, wherein said slots are time division multiple access slots.

3. The method of claim 1, wherein said response includes positioning information.

4. The method of claim 3, wherein said response includes code phase information.

5. The method of claim 1, wherein said response includes sensor information.

6. The method of claim 1, wherein each forward link and return link is on a different frequency.