Investigation of Cooperation Technologies in Heterogeneous Wireless Networks

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Heterogeneous wireless networks based on varieties of Radio Access Technologies (RATs) and standards will coexist in the future. In order to exploit this potential multiaccess gain, it is required that different RATs are managed in a cooperative fashion. This paper proposes two advanced functional architecture supporting the functionalities of interworking between WiMAX and 3GPP networks as a specific case: Radio Control Server- (RCS-) and Access Point- (AP-) based centralized architectures. The key technologies supporting the interworking are then investigated, including proposing the Generic Link Layer (GLL) and researching the MultiRadio Resource Management (MRRM) mechanisms.