As no single wireless network can provide both broadband high-speed radio transmission and seamless full mobility for commercial wireless communications in terms of technology, cost, spectrum and performance, a new wireless converged network access infrastructure based on Open Wireless Architecture (OWA) has been disclosed, wherein the spectrum is separated into low spectrum band (LSB) for wide area seamless mobility networks and high spectrum band (HSB) for very high-speed broadband wireless access systems in order to maximize the spectrum utilization efficiency for the converged multiple wireless access networks of the fully service-oriented wireless communications including multimedia broadcast and multicast service.