UE-Based Adaptive Uplink Power Control to Enhance Cell Capacity of LTE Systems

We consider the uplink open-loop power control (OLPC) procedure in Long Term Evolution (LTE) cellular networks. We propose a UE based adaptive OLPC approach where a UE selectively, and autonomously, applies predetermined offsets to the standardized open-loop power control parameters such as P_{O_UE_PUSCH} and α as a function of its relative location. The proposed approach increases overall uplink signal to interference and noise ratio (UL SINR) at eNodeBs. As a result, UL cell throughput improves with no additional over the air signaling or extra processing load at eNodeBs. Our simulation results show that the UE-based adaptive OLPC approach significantly increases the center-cell UE´s throughput at the expense of a slight, and controllable, throughput degradation of the UEs at the cell-edge.