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Free space optical terminal with ad hoc network back-up and associated methods

A free space, terminal technology, applied in the field of communication systems

Inactive Publication Date: 2007-08-01
HARRIS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And, even if the redundant system is kept idle, there are costs associated with maintaining the system in working order

Method used

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  • Free space optical terminal with ad hoc network back-up and associated methods
  • Free space optical terminal with ad hoc network back-up and associated methods
  • Free space optical terminal with ad hoc network back-up and associated methods

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Embodiment Construction

[0017] Hereinafter, the present invention will be described more fully with reference to the accompanying drawings, in which preferred embodiments of the invention are shown. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. The same numbers are used throughout to refer to the same elements.

[0018] Referring initially to Figures 1 and 2, a communication system 10 in accordance with the present invention will first be described. The communication system 10 includes a pair of free space optical (FSO) communication terminals 30a, 30b positioned in spaced relationship to define a dedicated, point-to-point FSO communication link using an optical beam 32 to carry communication traffic in a first mode of operation. System ...

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Abstract

A communication system includes a pair free space optical (FSO) terminals. The FSO terminals switch from a first operating mode to a second operating mode wherein the traffic is carried by an ad hoc network. The switching may be based upon a quality of service (QoS) parameter being exceeded. The first operating mode may be the primary operating mode, and the second operating mode may be the back-up operating mode.

Description

technical field [0001] The present invention relates to the field of communication systems, in particular, to a free-space optical communication system and related methods for bearer communication. Background technique [0002] A free space optical (FSO) communication system is a wireless point-to-point communication system that transmits and receives signals using laser light through the line of sight pointed by the laser beam. Because the beam is straight and narrow, FSO communication systems are generally considered safe and reliable. The beam can be used with sufficiently low power to reduce the risk of eye injury. For example, an FSO system that varies power levels is disclosed in US Patent No. 5,229,593. [0003] The FSO communication system has proven to be very beneficial in the campus environment. For example, a business organization wishes to build a local area network (LAN) that connects employees located in different nearby buildings. If the organization inte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q7/24H04L12/56H04B7/26H04B10/03H04B10/11H04L12/28H04W24/04H04W76/04H04W84/18H04W88/06H04W88/10H04W92/02
CPCH04B10/1125H04W92/02H04W76/041H04W84/18H04W24/04H04W88/10H04W88/06H04W76/22H04B7/18504H04B7/18506H04B10/11H04B10/03
Inventor 迈克尔·P·泽特福斯
Owner HARRIS CORP