In light of the current technology trends in the area of applications, wireless networks, and terminals, this article isolates a number of design requirements of future advanced mobile systems. We discuss research and standardization activities in the area of service support platforms and their corresponding application programming interfaces (API), where we especially focus on the wireless application protocol (WAP), Mobile Station Execution Environment (MExE), and HTTP-NG as candidates for the provision of mobile Internet services in cellular networks.
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