Abstract-In this paper, we focus on the radio resource management problem for the Orthogonal Frequency Division Multiple Access (OFDMA)-based mobile relay-enhanced heterogenous cellular networks. We combine mobile relaying and data offloading scenarios to increase the capacity of the system and cope with the mobile data traffic volume that is increased by the number of wireless subscribers accessing mobile data services. We propose network interface selection, relay selection and resource allocation solutions for this scenario and show effect of relaying and data offloading on the system capacity and on the ratio of satisfied users.

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Flexible network management solutions for heterogeneous networks have attracted increasing attention for operators in order to meet the today's exponential network traffic demands. Over decades, mobile operators have been developing and deploying new heterogeneous systems into their infrastructures. However, converging the cellular networks with heterogeneous devices such as Carrier Wi-Fi still remains a challenging task for mobile carriers. In this study, a connectivity management platform integrated with a multiple attribute decision making algorithm for efficient Wi-Fi Offloading in heterogeneous wireless networks is presented. To enable this platform, several terminal and network level attributes are periodically collected and sent to the connectivity manager inside operator's network. The connectivity manager runs a multiple attribute decision making algorithm and the decision on the best access network connection is sent back to terminals for execution. The proposed platform can be deployed to mobile operator networks for centralized heterogeneous network management.

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