Outage in a Cellular Network Overlaid With an Ad Hoc Network: The Uplink Case
The authors analyze the uplink outage probability at the randomly, but not necessarily independently nor homogeneously, distributed cellular network receivers caused by an overlaid secondary ad hoc network. Unlike the previous works that assumed exact circular exclusion regions (or guard zones), they incorporate a sensing mechanism to decrease the significant effect of the nearby interferers. They consider Rayleigh-faded links, large-scale power control, and the knowledge of the initial outages in the absence of the secondary network. They derive an upper bound on the outage probability and show it to be tight when the co-channel primary receivers are separated by relatively significant distances, which is inherently the case for the cellular network.