With the development of wireless communication and portable devices, people can now enjoy the benefits of mobile computing. But due to the nature and design of portable devices, it is unlikely portable devices can provide certain functionalities with the same quality as fixed devices. In mobile computing, it is not trivial to attain computing within a fixed network environment with high-power workstations. A means of discovering available computing resources and enabling manipulation of them to cooperate with mobile devices in order to maintain the continuous computing with better quality is required. In this paper we present a novel architecture that supports computing migration between mobile and fixed devices through context awareness and transmission methods. KEYWORDS Computing Migration, Context Awareness, Context Transmission, Context -rebuildable Applications, Portable Computers, Wireless Communication.