Radio Resource Management in Cellular Multihop Networks

摘要

In future mobile broadband radio systems multihop for coverage extension is seen as a basic building block. Here we investigate radio resource management (RRM) for multihop networks and assume that the central access point (AP) can control the whole multihop network based on channel state information (CSI) of all links. Specifically we investigated interference effects between neighboring multihop networks and within a multihop network as well. Interference within a multihop network occurs only when the central scheduler allows simultaneous transmission for the same time and frequency - here called SIMU - on several radio links. It is shown, that SIMU can increase overall capacity of a multihop network compared to a fully orthogonal transmission - here called TDMA -, where only one single link is active simultaneously. For neighboring multihop networks it is shown, that inter cell interference (ICI) may be treated as additive white gaussian noise (AWGN) with typically only small performance degradations.