System and method for supporting operations of advanced power over ethernet system

Abstract

A Power over Ethernet (PoE) system having a Power Sourcing Equipment (PSE) and a Powered Device (PD) configured for interacting over four pairs of wire provided for supplying power from the PSE to the PD. The PSE and the PD are configured to perform separate PD classification procedures over first and second 2-pair sets to support PoE operations that are not defined by the IEEE 802.3af standard.

1 . A Power over Ethernet (PoE) system comprising a Power Sourcing Equipment (PSE) and a Powered Device (PD) configured for interacting over a first 2-pair set of wires and a second 2-pair set of wires provided for supplying power from the PSE to the PD; the PSE and the PD being configured to perform separate PD classification procedures over the first and the second 2-pair sets to support PoE operations that are not defined by the IEEE 802.3af standard.  
   
   
       2 . The system of  claim 1 , wherein the PSE is configured to perform first classification of the PD over the first set, followed by second classification of the PD performed over the second set, and the PD is configured to present a class during the second classification different from the class presented during the first classification.  
   
   
       3 . The system of  claim 1 , wherein the PSE and the PD are configured to perform first classification of the PD over the first set and second classification of the PD over the second set, and the PD is configured to present on the first set a class different from the class presented during the first classification as the second classification of the PD is performed over the second set.  
   
   
       4 . The system of  claim 1 , wherein the PSE and the PD are configured to perform first classification of the PD over the first set, followed by second classification of the PD performed over the second set, and the PD is configured to present during a further classification of the PD over the first set a class different from the class presented during the first classification.  
   
   
       5 . The system of  claim 1 , wherein the PD is configured to determine information on a type of the PSE based on output current of the PSE at short circuit condition.  
   
   
       6 . The system of  claim 1 , wherein the PD is configured for performing a classification scheme to request a higher amount of power from a PSE and gradually reduce the requested amount of power if the request for power is denied by the PSE.  
   
   
       7 . The system of  claim 1 , wherein the PD is configured for performing a classification scheme to request a lower amount of power from a PSE and gradually increase the requested amount of power if the request for power is granted by the PSE.  
   
   
       8 . The system of  claim 1  further comprising an integrated connector having a housing configured for accommodating circuitry of the PD inside the connector.  
   
   
       9 . The system of  claim 1  further comprising an integrated connector including a coupler for attaching circuitry of the PD to the connector.  
   
   
       10 . A PoE system comprising a PD detection mechanism for detecting a PD by determining presence of one or more diodes in a device connected to a PSE via a line, the PD detection mechanism is configured for detecting presence of the diodes based on an offset voltage in current-voltage characteristics of the line.  
   
   
       11 . A PoE system having a PD interface for supporting PoE connection of a PD to a PSE, and a PoE interface controller for providing a power interface port for the PD, circuitry including active switching elements being connected between the interface and the controller.