A cooperative algorithm for cellular assignment and power control

This article overviews intra cell power control approach concepts presently employed in communications systems. The results obtained from the preceding development yield several necessary conditions to achieve ideal system wide optimization. From these conditions, the importance of an integrated power control and cell assignment algorithm is made apparent. A distributed algorithm which achieves such system wide power control is introduced, and evaluated. Implemented through dynamically controlled base station (BS) pilot tones powers, the algorithm attempts to vary cell sizes in order to accommodate varying congestion conditions. The power of these tones links channel assignment and power control together. Simulation results illustrate that the proposed algorithm does indeed demonstrate significant network level improvements, most importantly an increased localized system capacity in nonuniform distribution conditions, without sacrificing the quality of signal for existing users.