Relationships for three-dimensional modeling of co-channel reuse

Ubiquitous use of low-power hand-held radiotelephone units will introduce a third dimension into channel assignment architecture. Co-channel reuse rules in two dimensions are reviewed and extended to three dimensions. Rules for generating N (number of channel sets) and D/R (which affects median signal-to-interference ratio) are developed for several three-dimensional geometries. It is shown that in three dimensions, a much larger N will be needed. However, other factors which may mitigate this are discussed.