Patent ID: 7885250
Filing Date: 2011-02-08
Classification: H04J,H04L

Abstract:
1. A method for synchronizing a timing of multiple fixed wireless Access Points and/or Synchronization Units in a network communicating under an Ethernet-related protocol, comprising the steps of: (a) arranging a cable comprising at least four pairs of twisted wires connected between an Ethernet LAN and a plurality of fixed Access Points (AP) and/or Synchronization Units (SU) in a network; (b) assigning a first pair of the at least four pairs of twisted wire to carry a positive D.C. rail voltage to at least one (AP) or (SU), and assigning a second pair of the least four pairs of twisted wire to carry a negative D.C. rail voltage to said at least one (AP) or (SU); (c) providing to at least one pair of the first and second pairs of twisted wires a series of synchronization pulses generated from a synchronization source and capacitively-coupled to the said at least one pair of twisted wires so as to supply a composite signal that includes the series of synchronization pulses and at least one of the positive and negative D.C. voltage rails to a first end of said at least one pair of twisted wires; and (d) reconstructing the generated synchronization pulses by detecting pulses on the positive and negative D.C. voltage rails at a second end of said at least one pair of twisted wires by said at least one (AP) or (SU).