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 pre-determined offsets to the standardized open-loop power control parameters such as P O_UE_...

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Bibliographic Details
Main Authors: Bautista, Jose Edson Vargas, Malmirchegini, Mehrzad, Yenamandra, Rao, Chaudhuri, Kausik Ray
Format: Conference Proceeding
Language:English
Subjects:
Adaptive systems
fractional power control
Interference
Long Term Evolution (LTE)
open-loop power control
Power control
Signal to noise ratio
Simulation
Throughput
Uplink
uplink power control
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Summary: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 pre-determined 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.
ISSN:1550-2252
DOI:10.1109/VTCSpring.2015.7146142