Patent ID: 7894339

Claim:
A bridge system for connecting a high-speed Power Line Communication (PLC) network providing Quality of Service (QoS) and an Ethernet providing no QoS, the bridge system comprising: a Quality of Service (QoS) control unit for controlling a QoS process of the entire bridge system; a flow managing unit for storing and managing connection information of a flow, QoS information required by each flow, and information required for executing a bridge function; a bridge QoS processing unit for allocating and managing internal resources of the bridge system and providing the QoS by controlling the QoS control unit and making reference to information stored in the flow managing, wherein allocating and managing internal resources and providing the QoS Includes transforming QoS information provided from the QoS control unit into locally required QoS information in the inside of the bridge system, determining whether the local QoS can be satisfied by the bridge QoS processing unit, and allocating and managing internal resources of the bridge system according to the local QoS; a PLC QoS processing unit for managing the QoS of the PLC network by control of the QoS control unit, wherein managing the QoS of the PLC network includes transforming QoS information provided from the QoS control unit into QoS information proper to the PLC network; and an Ethernet QoS processing unit for managing a link state of the Ethernet and providing the link state to the QoS control unit.