The Internet Protocol (IP) dominates in today’s data communication infrastructures. The network evolution also favors the explosion of the wireless network technologies. The latter have to be combined and interoperate properly with current wireline installations. Although IP assures interoperability, there are open interworking issues at the session, network, and data link layers related to the nature of the wireless environment. The architecture presented in this paper, proposes specific enhancements to an IP infrastructure, that alleviate the deficiencies of wireless networks and propel the efficient interworking between wireline and wireless network technologies.