Patent ID: 8005090

Claim:
A QoS information notification method for transmitting QoS information over a multi-domain network, the multi-domain network including a first domain and a second domain, the first domain including a first communication apparatus and a first inter-domain signaling apparatus, the second domain including a second communication apparatus and a second inter-domain signaling apparatus, the QoS information notification method comprising: (a) the first inter-domain signaling apparatus transmitting, in the first domain, QoS information to the first communication apparatus; (b) the first communication apparatus transmitting, from the first domain, the received QoS information and an identifier for the first inter-domain signaling apparatus to the second communication apparatus of the second domain; (c) the second communication apparatus transmitting, in the second domain, the received QoS information, a route through which the received QoS information has passed, and the identifier for the first inter-domain signaling apparatus to the second inter-domain signaling apparatus; and (d) the second inter-domain signaling apparatus associating the received QoS information with the received route in the second domain.