Layered reception for heterogeneous traffics from mobile cloud applications

In this paper, we consider a new architecture for mobile systems to effectively accommodate mobile cloud computing traffics in conjunction with conventional delay-limited traffics (e.g., voice traffics). It is assumed that small base stations (BSs) do not decode cloud data streams from a user, but forward the received signals from the users to a cloud server (CS), while small BSs are to decode conventional delay-limited data streams. The resulting approach is called layered reception for uplink transmissions as decoding takes place in different layers. For a dense deployment of small BSs, we can exploit a macro-diversity gain. For the power allocation, we derive a closed-form expression for the outage probability of delay-limited traffics over a block-fading channel. The impact of the macro-diversity gain on the performances has also be shown by the outage probability analysis.