Patent ID: 7746843

Claim:
A method for providing reliable transmission Quality of Service (QoS) in a communication network, the method comprising: A. a local bearer network resource manager sending an establish connection request to a peer bearer network resource manager for requesting to create a QoS connection between the local bearer network resource manager and the peer bearer network resource manager; B. the local bearer network resource manager receiving an establish connection response from the peer bearer network resource manager so as to create the QoS connection; C. the local bearer network resource manager periodically sending a handshake message to the peer bearer network resource manager, and determining a connection status according to a handshake response returned by the peer bearer network resource manager; and D. the local bearer network resource manager transmitting QoS information to the peer bearer network resource manager through the QoS connection, wherein the QoS information is provided to connection nodes connected to the local bearer network resource manager and the peer bearer network resource manager respectively for providing a corresponding resource; wherein C comprises, C1. creating a local Keep Active (KA) timer at the local bearer network resource manager, and creating a peer Keep Active (KA) timer at the peer bearer network resource manager, C2. when the local KA timer is timed out, the local bearer network resource manager adding 1 to timeout times of the local KA timer and sending a further handshake message to the peer bearer network resource manager, C3. after receiving the further handshake message, the peer bearer network resource manager restarting the peer KA timer and returning a handshake response to the local bearer network resource manager, and C4. the local bearer network resource manager determining the connection status according to the timeout times of the local KA timer, the peer bearer network resource manager determining the connection status according to whether the peer KA timer is timed out.