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This paper presents the software architecture of a high speed power line communication and ultra-wideband bridge system that can guarantee quality of service (QoS) for multimedia streaming in a home network. Due to recent wireless technology developments, ultra-wideband is becoming a viable solution for low cost personal area communication and home entertainment applications. Ultra-wideband has good features such as high bandwidth and low power consumption for mobile multimedia streaming, but it only supports communications over short distances due to its wave characteristics. Therefore, we have to use wired communication to extend the ultra-wideband coverage area. High speed PLC does not require any additional wiring in order to transmit a high bandwidth multimedia stream and provides sufficient bandwidth for handling a home entertainment network. Therefore a high speed PLC and ultra-wideband bridge system provides a multimedia streaming environment in the home without new wiring. The bridge system proposed can provide UPnP QoS device service and the traffic characteristic management function for end-to-end QoS for various multimedia services in the home.