US 2010/0092178 A1 · Method and Apparatus for Sensing Channel Availability in Wireless Networks

Abstract

A method and apparatus is provided for applying an electroding tone to a power conductor located in an undersea optical cable employed in an undersea optical transmission system having at least one repeater. The method begins by applying a DC line current to the power conductor. The DC line current has a value sufficient to power the repeater and less than a value sufficient to power the repeater and to perform electroding. An AC current is impressed on the DC line current at a prescribed frequency and a peak-to-peak amplitude ranging from zero and a prescribed value to generate the tone. The impression or application of the AC current is terminated after a period of time at least sufficient to locate the optical cable or an optical cable fault.

Claims29

Dependent claims

A method for sensing channel availability in a wireless network, said method comprising:

switching to a first candidate channel for operational data transmission and reception;
sensing a previous operating channel for availability;
determining if said previous operating channel is available;
switching back to said previous operating channel if said previous operating channel is available;
and
if a current operating channel is unavailable, one of continuing to use said candidate channel for operational data transmission and reception and switching to a second candidate channel for operational data transmission and reception and switching to said second candidate channel for operational data transmission and reception after a period of time.

3 more elements

Dependencies are inferred from the claim text.

Method and Apparatus for Sensing Channel Availability in Wireless Networks

Life of this patent

Method and Apparatus for Sensing Channel Availability in Wireless Networks

Life of this patent

Abstract

Claims29