An approach is provided for supporting Quality of Service (QoS) signaling between radio networks. A request message is generated for configuring an air link of a first radio network according to a Quality of Service (QoS) requirement specified in the request message, wherein the request message is transmitted...http://www.google.com.tw/patents/US20060114855?utm_source=gb-gplus-share專利 US20060114855 - Quality of service (QOS) signaling for a wireless network