Abstract: Simplifying operation complexity and improving quality of experience in hybrid network environment for customers is becoming a popular technology in the next generation ultra-broadband network design.Aiming at enhancing operation experience for end-users,this paper defines the architecture and content of self-assignment service in fixed-mobile convergence network environment.Related key technologies to deploy self-assignment service are elaborated through typical case studying in 3G/Wi-Fi scenario.At last,we propose a series developing strategies in the construction of network for network operators.