First responders are suffering from insufficient information about the incident during alerting and operations at the scene itself. Particularly at major incident operations de- tailed and up-to-date multimedia information are indispens- able and have to be provided as fast and reliable as possi- ble to the rescue forces. Thus, challenging requirements on the mobile communication system like traffic prioritization, seamless handover and everywhere connectivity arise from this use case. In this paper we present a holistic approach for a suitable heterogeneous communication architecture considering the complete mobility management process that consists of mo- bility modeling, handover trigger algorithms and IP-based handover protocols applied on a big public event at a sta- dium.