On Uncoordinated Multi User Multi RAT Combining

Nowadays, wireless systems allow us to have connectivity almost everywhere. Different radio access technologies are integrated in the same device and they can be used following the specific service requirements, the actual received signal levels, and the costs related to their use. Presently, technologies are always seen as alternatives, but it is envisioned that different wireless connections may be used cooperatively in order to enhance the throughput perceived by the end user. In this paper we discuss this opportunity trying to understand what would be the impact of a multi technology combining in a multi user scenario with no coordination among access networks.