we first briefly introduce the development of next generation network technologies and IETF QoS mechanisms
and summarize the limitations of current PON technologies on supporting end-to-end QoS
and then we propose the GMPLS-based passive optical network service model. By deploying GMPLS as the common control and management platform in optical access network
a unified QoS service model can be established for supporting of end-to-end QoS effectively.